Don't run ruby 2.5.0 with rails 4.1

https://github.com/rails/rails/issues/25125

.travis.yml

@@ -1,23 +1,39 @@
 language: ruby
 
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1
-  - 2.2
+  - 2.1.10
+  - 2.2.8
+  - 2.3.5
+  - 2.4.2
+  - 2.5.0
+  - ruby-head
 
 gemfile:
+  - Gemfile
+  - gemfiles/Gemfile.rails-5.0-stable
   - gemfiles/Gemfile.rails-4.2-stable
   - gemfiles/Gemfile.rails-4.1-stable
-  - gemfiles/Gemfile.rails-4.0-stable
-  - gemfiles/Gemfile.rails-3.2-stable
-  - Gemfile
 
 matrix:
   exclude:
-    - rvm: 2.2
-      gemfile: gemfiles/Gemfile.rails-3.2-stable
-
+    - rvm: 2.1.10
+      gemfile: Gemfile
+    - rvm: 2.5.0
+      gemfile: gemfiles/Gemfile.rails-4.1-stable
+    - rvm: 2.4.2
+      gemfile: gemfiles/Gemfile.rails-4.1-stable
+    - rvm: ruby-head
+      gemfile: gemfiles/Gemfile.rails-4.1-stable
+    - rvm: 2.1.10
+      gemfile: gemfiles/Gemfile.rails-5.0-stable
+    - rvm: 2.1.10
+      gemfile: Gemfile
+    - env: DEVISE_ORM=mongoid
+      gemfile: Gemfile
+    - env: DEVISE_ORM=mongoid
+      gemfile: gemfiles/Gemfile.rails-5.0-stable
+  allow_failures:
+    - rvm: ruby-head
 services:
   - mongodb
 
@@ -27,18 +43,21 @@ cache: bundler
 
 env:
   matrix:
-    - DEVISE_ORM=mongoid
     - DEVISE_ORM=active_record
+    - DEVISE_ORM=mongoid
 
-before_install: "rm ${BUNDLE_GEMFILE}.lock"
+before_install:
+  - "rm ${BUNDLE_GEMFILE}.lock"
+  - gem update --system
 
 before_script: "bundle update"
 
-script: "bundle exec rake test"
+script: "bin/test"
 
 notifications:
   email: false
   slack:
+    on_pull_requests: false
     on_success: change
     on_failure: always
     secure: Q3M+kmude3FjisibEeeGe0wSMXgvwLH+vL7Zrx9//q4QtkfnrQ/BBMvY9KXxPEsNF+eys4YopYjTkJ8uRmeboUATW/oQ4Jrv3+u3zkIHK2sFn/Q2cQWpK5w+CbgEnHPjKYnUu34b09njXTgDlr/mqtbPqrKeZ1dLlpKXCB/q4GY=

CONTRIBUTING.md

@@ -1,16 +1,79 @@
-### Please read before contributing
+# How to contribute to Devise
 
-1) Do not post questions in the issues tracker. If you have any questions about Devise, search the [Wiki](https://github.com/plataformatec/devise/wiki) or use the [Mailing List](https://groups.google.com/group/plataformatec-devise) or [Stack Overflow](http://stackoverflow.com/questions/tagged/devise).
+Thanks for your interest on contributing to Devise! Here are a few general
+guidelines on contributing and reporting bugs to Devise that we ask you to
+take a look first. Notice that all of your interactions in the project are
+expected to follow our [Code of Conduct](CODE_OF_CONDUCT.md).
 
-2) If you find a security bug, **DO NOT** submit an issue here. Please send an e-mail to [opensource@plataformatec.com.br](mailto:opensource@plataformatec.com.br) instead.
+## Reporting Issues
 
-3) Do a small search on the issues tracker before submitting your issue to see if it was already reported / fixed.
+Before reporting a new issue, please be sure that the issue wasn't already
+reported or fixed by searching on GitHub through our [issues](https://github.com/plataformatec/devise/issues).
 
-4) When reporting an issue, include Rails, Devise and Warden versions. If you are getting exceptions, please include the full backtrace.
+When creating a new issue, be sure to include a **title and clear description**,
+as much relevant information as possible, and either a test case example or
+even better a **sample Rails app that replicates the issue** - Devise has a lot
+of moving parts and it's functionality can be affected by third party gems, so
+we need as much context and details as possible to identify what might be broken
+for you. We have a [test case template](guides/bug_report_templates/integration_test.rb)
+that can be used to replicate issues with minimal setup.
 
-5) Notice that all of your interactions in the project are expected to follow our [Code of Conduct](CODE_OF_CONDUCT.md)
+Please do not attempt to translate Devise built in views. The views are meant
+to be a starting point for fresh apps and not production material - eventually
+all applications will require custom views where you can write your own copy and
+translate it if the application requires it . For historical references, please look into closed
+[Issues/Pull Requests](https://github.com/plataformatec/devise/issues?q=i18n) regarding
+internationalization.
 
-That's it! The more information you give, the easier it becomes for us to track it down and fix it.
-Ideally, you should provide an application that reproduces the error or a test case to Devise's suite.
+Avoid opening new issues to ask questions in our issues tracker. Please go through
+the project wiki, documentation and source code first, or try to ask your question
+on [Stack Overflow](http://stackoverflow.com/questions/tagged/devise).
 
-Thanks!
+**If you find a security bug, do not report it through GitHub. Please send an
+e-mail to [opensource@plataformatec.com.br](mailto:opensource@plataformatec.com.br)
+instead.**
+
+## Sending Pull Requests
+
+Before sending a new Pull Request, take a look on existing Pull Requests and Issues
+to see if the proposed change or fix has been discussed in the past, or if the
+change was already implemented but not yet released.
+
+We expect new Pull Requests to include enough tests for new or changed behavior,
+and we aim to maintain everything as most backwards compatible as possible,
+reserving breaking changes to be ship in major releases when necessary - you
+can wrap the new code path with a setting toggle from the `Devise` module defined
+as `false` by default to require developers to opt-in for the new behavior.
+
+If your Pull Request includes new or changed behavior, be sure that the changes
+are beneficial to a wide range of use cases or it's an application specific change
+that might not be so valuable to other applications. Some changes can be introduced
+as a new `devise-something` gem instead of belonging to the main codebase.
+
+When adding new settings, you can take advantage of the [`Devise::Models.config`](https://github.com/plataformatec/devise/blob/245b1f9de0b3386b7913e14b60ea24f43b77feb0/lib/devise/models.rb#L13-L50) method to add class and instance level fallbacks
+to the new setting.
+
+We also welcome Pull Requests that improve our existing documentation (both our
+`README.md` and the RDoc sections in the source code) or improve existing rough
+edges in our API that might be blocking existing integrations or 3rd party gems.
+
+## Other ways to contribute
+
+We welcome anyone that wants to contribute to Devise to triage and reply to
+open issues to help troubleshoot and fix existing bugs on Devise. Here is what
+you can do:
+
+* Help ensure that existing issues follows the recommendations from the
+_[Reporting Issues](#reporting-issues)_ section, providing feeback to the issue's
+author on what might be missing.
+* Review and update the existing content of our [Wiki](https://github.com/plataformatec/devise/wiki)
+with up to date instructions and code samples - the wiki was grown with several
+different tutorials and references that we can't keep track of everything, so if
+there is a page that showcases an integration or customization that you are
+familiar with feel free to update it as necessary.
+* Review existing Pull Requests, and testing patches against real existing
+applications that use Devise.
+
+Thanks again for your interest on contributing to the project!
+
+:heart:

Gemfile

@@ -1,15 +1,24 @@
+# frozen_string_literal: true
+
 source "https://rubygems.org"
 
 gemspec
 
-gem "rails", "4.2.2"
-gem "omniauth", "~> 1.2.0"
-gem "omniauth-oauth2", "~> 1.1.0"
+gem "rails", "~> 5.1"
+gem "omniauth", "~> 1.3"
+gem "oauth2"
+gem "omniauth-oauth2"
 gem "rdoc"
 
+gem "activemodel-serializers-xml", github: "rails/activemodel-serializers-xml"
+
+gem "rails-controller-testing"
+
+gem "responders", "~> 2.1"
+
 group :test do
   gem "omniauth-facebook"
-  gem "omniauth-openid", "~> 1.0.1"
+  gem "omniauth-openid"
   gem "webrat", "0.7.3", require: false
   gem "mocha", "~> 1.1", require: false
 end
@@ -24,6 +33,7 @@ platforms :ruby do
   gem "sqlite3"
 end
 
-group :mongoid do
-  gem "mongoid", "~> 4.0"
-end
+# TODO:
+# group :mongoid do
+#   gem "mongoid", "~> 4.0.0"
+# end

Gemfile.lock

@@ -1,183 +1,193 @@
+GIT
+  remote: git://github.com/rails/activemodel-serializers-xml.git
+  revision: dd9c0acf26aab111ebc647cd8deb99ebc6946531
+  specs:
+    activemodel-serializers-xml (1.0.1)
+      activemodel (> 5.x)
+      activesupport (> 5.x)
+      builder (~> 3.1)
+
 PATH
   remote: .
   specs:
-    devise (3.5.3)
+    devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
+      railties (>= 4.1.0, < 5.2)
       responders
-      thread_safe (~> 0.1)
       warden (~> 1.2.3)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
+    actioncable (5.1.0)
+      actionpack (= 5.1.0)
+      nio4r (~> 2.0)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.1.0)
+      actionpack (= 5.1.0)
+      actionview (= 5.1.0)
+      activejob (= 5.1.0)
       mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.2)
-      actionview (= 4.2.2)
-      activesupport (= 4.2.2)
-      rack (~> 1.6)
-      rack-test (~> 0.6.2)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    actionview (4.2.2)
-      activesupport (= 4.2.2)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.1.0)
+      actionview (= 5.1.0)
+      activesupport (= 5.1.0)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.1.0)
+      activesupport (= 5.1.0)
       builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    activejob (4.2.2)
-      activesupport (= 4.2.2)
-      globalid (>= 0.3.0)
-    activemodel (4.2.2)
-      activesupport (= 4.2.2)
-      builder (~> 3.1)
-    activerecord (4.2.2)
-      activemodel (= 4.2.2)
-      activesupport (= 4.2.2)
-      arel (~> 6.0)
-    activesupport (4.2.2)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (5.1.0)
+      activesupport (= 5.1.0)
+      globalid (>= 0.3.6)
+    activemodel (5.1.0)
+      activesupport (= 5.1.0)
+    activerecord (5.1.0)
+      activemodel (= 5.1.0)
+      activesupport (= 5.1.0)
+      arel (~> 8.0)
+    activesupport (5.1.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    arel (6.0.0)
-    bcrypt (3.1.10)
-    bson (3.1.2)
-    builder (3.2.2)
-    connection_pool (2.2.0)
-    erubis (2.7.0)
-    faraday (0.9.1)
+    arel (8.0.0)
+    bcrypt (3.1.11)
+    builder (3.2.3)
+    concurrent-ruby (1.0.5)
+    erubi (1.6.0)
+    faraday (0.11.0)
       multipart-post (>= 1.2, < 3)
-    globalid (0.3.5)
-      activesupport (>= 4.1.0)
-    hashie (3.4.0)
-    i18n (0.7.0)
-    json (1.8.3)
-    jwt (1.4.1)
-    loofah (2.0.2)
+    globalid (0.4.0)
+      activesupport (>= 4.2.0)
+    hashie (3.5.5)
+    i18n (0.8.1)
+    jwt (1.5.6)
+    loofah (2.0.3)
       nokogiri (>= 1.5.9)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    mail (2.6.5)
+      mime-types (>= 1.16, < 4)
     metaclass (0.0.4)
-    mime-types (2.6.1)
-    mini_portile (0.6.2)
-    minitest (5.7.0)
-    mocha (1.1.0)
+    method_source (0.8.2)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.10.1)
+    mocha (1.2.1)
       metaclass (~> 0.0.1)
-    mongoid (4.0.2)
-      activemodel (~> 4.0)
-      moped (~> 2.0.0)
-      origin (~> 2.1)
-      tzinfo (>= 0.3.37)
-    moped (2.0.6)
-      bson (~> 3.0)
-      connection_pool (~> 2.0)
-      optionable (~> 0.2.0)
-    multi_json (1.11.1)
-    multi_xml (0.5.5)
+    multi_json (1.12.1)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    oauth2 (0.9.4)
-      faraday (>= 0.8, < 0.10)
+    nio4r (2.0.0)
+    nokogiri (1.7.1)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.3.1)
+      faraday (>= 0.8, < 0.12)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
-    omniauth (1.2.2)
-      hashie (>= 1.2, < 4)
-      rack (~> 1.0)
-    omniauth-facebook (1.6.0)
-      omniauth-oauth2 (~> 1.1)
-    omniauth-oauth2 (1.1.2)
-      faraday (>= 0.8, < 0.10)
-      multi_json (~> 1.3)
-      oauth2 (~> 0.9.3)
+      rack (>= 1.2, < 3)
+    omniauth (1.6.1)
+      hashie (>= 3.4.6, < 3.6.0)
+      rack (>= 1.6.2, < 3)
+    omniauth-facebook (4.0.0)
+      omniauth-oauth2 (~> 1.2)
+    omniauth-oauth2 (1.4.0)
+      oauth2 (~> 1.0)
       omniauth (~> 1.2)
     omniauth-openid (1.0.1)
       omniauth (~> 1.0)
       rack-openid (~> 1.3.1)
-    optionable (0.2.0)
-    origin (2.1.1)
     orm_adapter (0.5.0)
-    rack (1.6.2)
+    rack (2.0.1)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.2)
-      actionmailer (= 4.2.2)
-      actionpack (= 4.2.2)
-      actionview (= 4.2.2)
-      activejob (= 4.2.2)
-      activemodel (= 4.2.2)
-      activerecord (= 4.2.2)
-      activesupport (= 4.2.2)
+    rails (5.1.0)
+      actioncable (= 5.1.0)
+      actionmailer (= 5.1.0)
+      actionpack (= 5.1.0)
+      actionview (= 5.1.0)
+      activejob (= 5.1.0)
+      activemodel (= 5.1.0)
+      activerecord (= 5.1.0)
+      activesupport (= 5.1.0)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.2)
-      sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
-      activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.6)
-      activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
-      rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
+      railties (= 5.1.0)
+      sprockets-rails (>= 2.0.0)
+    rails-controller-testing (1.0.1)
+      actionpack (~> 5.x)
+      actionview (~> 5.x)
+      activesupport (~> 5.x)
+    rails-dom-testing (2.0.2)
+      activesupport (>= 4.2.0, < 6.0)
+      nokogiri (~> 1.6)
+    rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
-    railties (4.2.2)
-      actionpack (= 4.2.2)
-      activesupport (= 4.2.2)
+    railties (5.1.0)
+      actionpack (= 5.1.0)
+      activesupport (= 5.1.0)
+      method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.4.2)
-    rdoc (4.2.0)
-    responders (2.1.0)
-      railties (>= 4.2.0, < 5)
+    rake (12.0.0)
+    rdoc (5.1.0)
+    responders (2.4.0)
+      actionpack (>= 4.2.0, < 5.3)
+      railties (>= 4.2.0, < 5.3)
     ruby-openid (2.7.0)
-    sprockets (3.2.0)
-      rack (~> 1.0)
-    sprockets-rails (2.3.1)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    sprockets (3.7.1)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.0)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.13)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
-    warden (1.2.4)
+    warden (1.2.7)
       rack (>= 1.0)
     webrat (0.7.3)
       nokogiri (>= 1.2.0)
       rack (>= 1.0)
       rack-test (>= 0.5.3)
+    websocket-driver (0.6.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  activemodel-serializers-xml!
   activerecord-jdbc-adapter
   activerecord-jdbcsqlite3-adapter
   devise!
   jruby-openssl
   mocha (~> 1.1)
-  mongoid (~> 4.0)
-  omniauth (~> 1.2.0)
+  oauth2
+  omniauth (~> 1.3)
   omniauth-facebook
-  omniauth-oauth2 (~> 1.1.0)
-  omniauth-openid (~> 1.0.1)
-  rails (= 4.2.2)
+  omniauth-oauth2
+  omniauth-openid
+  rails (~> 5.1)
+  rails-controller-testing
   rdoc
+  responders (~> 2.1)
   sqlite3
   webrat (= 0.7.3)
 
 BUNDLED WITH
-   1.10.6
+   1.15.3

ISSUE_TEMPLATE.md

@@ -0,0 +1,19 @@
+## Precheck
+
+- Do not use the issues tracker for help or support, try Stack Overflow.
+- For bugs, do a quick search and make sure the bug has not yet been reported
+- Finally, be nice and have fun!
+
+## Environment
+
+- Ruby **[version]**
+- Rails **[version]**
+- Devise **[version]**
+
+## Current behavior
+
+Include code samples, errors, steps to reproduce the error and stacktraces if appropriate.
+
+Will be even more helpful if you provide a sample application or a test case that reproduces the error.
+
+## Expected behavior

MIT-LICENSE

@@ -1,4 +1,4 @@
-Copyright 2009-2015 Plataformatec. http://plataformatec.com.br
+Copyright 2009-2017 Plataformatec. http://plataformatec.com.br
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

README.md

@@ -4,7 +4,6 @@ By [Plataformatec](http://plataformatec.com.br/).
 
 [![Build Status](https://api.travis-ci.org/plataformatec/devise.svg?branch=master)](http://travis-ci.org/plataformatec/devise)
 [![Code Climate](https://codeclimate.com/github/plataformatec/devise.svg)](https://codeclimate.com/github/plataformatec/devise)
-[![Security](https://hakiri.io/github/plataformatec/devise/master.svg)](https://hakiri.io/github/plataformatec/devise/master)
 
 This README is [also available in a friendly navigable format](http://devise.plataformatec.com.br/).
 
@@ -17,8 +16,8 @@ Devise is a flexible authentication solution for Rails based on Warden. It:
 
 It's composed of 10 modules:
 
-* [Database Authenticatable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/DatabaseAuthenticatable): encrypts and stores a password in the database to validate the authenticity of a user while signing in. The authentication can be done both through POST requests or HTTP Basic Authentication.
-* [Omniauthable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Omniauthable): adds OmniAuth (https://github.com/intridea/omniauth) support.
+* [Database Authenticatable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/DatabaseAuthenticatable): hashes and stores a password in the database to validate the authenticity of a user while signing in. The authentication can be done both through POST requests or HTTP Basic Authentication.
+* [Omniauthable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Omniauthable): adds OmniAuth (https://github.com/omniauth/omniauth) support.
 * [Confirmable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Confirmable): sends emails with confirmation instructions and verifies whether an account is already confirmed during sign in.
 * [Recoverable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Recoverable): resets the user password and sends reset instructions.
 * [Registerable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Registerable): handles signing up users through a registration process, also allowing them to edit and destroy their account.
@@ -28,7 +27,49 @@ It's composed of 10 modules:
 * [Validatable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Validatable): provides validations of email and password. It's optional and can be customized, so you're able to define your own validations.
 * [Lockable](http://rubydoc.info/github/plataformatec/devise/master/Devise/Models/Lockable): locks an account after a specified number of failed sign-in attempts. Can unlock via email or after a specified time period.
 
-Devise is guaranteed to be thread-safe on YARV. Thread-safety support on JRuby is in progress.
+## Table of Contents
+
+<!-- TOC depthFrom:1 depthTo:6 withLinks:1 orderedList:0 -->
+
+- [Information](#information)
+	- [The Devise wiki](#the-devise-wiki)
+	- [Bug reports](#bug-reports)
+	- [StackOverflow and Mailing List](#stackoverflow-and-mailing-list)
+	- [RDocs](#rdocs)
+	- [Example applications](#example-applications)
+	- [Extensions](#extensions)
+	- [Contributing](#contributing)
+- [Starting with Rails?](#starting-with-rails)
+- [Getting started](#getting-started)
+	- [Controller filters and helpers](#controller-filters-and-helpers)
+	- [Configuring Models](#configuring-models)
+	- [Strong Parameters](#strong-parameters)
+	- [Configuring views](#configuring-views)
+	- [Configuring controllers](#configuring-controllers)
+	- [Configuring routes](#configuring-routes)
+	- [I18n](#i18n)
+	- [Test helpers](#test-helpers)
+	- [Controller tests](#controller-tests)
+	- [Integration tests](#integration-tests)
+	- [OmniAuth](#omniauth)
+	- [Configuring multiple models](#configuring-multiple-models)
+- [Create a migration with the required fields](#create-a-migration-with-the-required-fields)
+- [Inside your Admin model](#inside-your-admin-model)
+- [Inside your routes](#inside-your-routes)
+- [Inside your protected controller](#inside-your-protected-controller)
+- [Inside your controllers and views](#inside-your-controllers-and-views)
+	- [ActiveJob Integration](#activejob-integration)
+	- [Password reset tokens and Rails logs](#password-reset-tokens-and-rails-logs)
+	- [Other ORMs](#other-orms)
+- [Additional information](#additional-information)
+	- [Heroku](#heroku)
+	- [Warden](#warden)
+	- [Contributors](#contributors)
+- [License](#license)
+
+<!-- /TOC -->
+
+
 
 ## Information
 
@@ -46,9 +87,13 @@ https://github.com/plataformatec/devise/wiki/Bug-reports
 
 If you have discovered a security related bug, please do *NOT* use the GitHub issue tracker. Send an email to opensource@plataformatec.com.br.
 
-### Mailing list
+### StackOverflow and Mailing List
 
-If you have any questions, comments, or concerns, please use the Google Group instead of the GitHub issue tracker:
+If you have any questions, comments, or concerns, please use StackOverflow instead of the GitHub issue tracker:
+
+http://stackoverflow.com/questions/tagged/devise
+
+The deprecated mailing list can still be read on
 
 https://groups.google.com/group/plataformatec-devise
 
@@ -92,37 +137,40 @@ Once you have solidified your understanding of Rails and authentication mechanis
 
 ## Getting started
 
-Devise 3.0 works with Rails 3.2 onwards. You can add it to your Gemfile with:
+Devise 4.0 works with Rails 4.1 onwards. You can add it to your Gemfile with:
 
 ```ruby
 gem 'devise'
 ```
 
-Run the bundle command to install it.
+Then run `bundle install`
 
-After you install Devise and add it to your Gemfile, you need to run the generator:
+Next, you need to run the generator:
 
 ```console
-rails generate devise:install
+$ rails generate devise:install
 ```
 
-The generator will install an initializer which describes ALL of Devise's configuration options. It is *imperative* that you take a look at it. When you are done, you are ready to add Devise to any of your models using the generator:
-
-```console
-rails generate devise MODEL
-```
-
-Replace MODEL with the class name used for the application’s users (it’s frequently `User` but could also be `Admin`). This will create a model (if one does not exist) and configure it with default Devise modules. The generator also configures your `config/routes.rb` file to point to the Devise controller.
-
-Next, check the MODEL for any additional configuration options you might want to add, such as confirmable or lockable. If you add an option, be sure to inspect the migration file (created by the generator if your ORM supports them) and uncomment the appropriate section.  For example, if you add the confirmable option in the model, you'll need to uncomment the Confirmable section in the migration. Then run `rake db:migrate`
-
-Next, you need to set up the default URL options for the Devise mailer in each environment. Here is a possible configuration for `config/environments/development.rb`:
+At this point, a number of instructions will appear in the console. Among these instructions, you'll need to set up the default URL options for the Devise mailer in each environment. Here is a possible configuration for `config/environments/development.rb`:
 
 ```ruby
 config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
 ```
 
-You should restart your application after changing Devise's configuration options. Otherwise, you will run into strange errors, for example, users being unable to login and route helpers being undefined.
+The generator will install an initializer which describes ALL of Devise's configuration options. It is *imperative* that you take a look at it. When you are done, you are ready to add Devise to any of your models using the generator.
+
+
+In the following command you will replace `MODEL` with the class name used for the application’s users (it’s frequently `User` but could also be `Admin`). This will create a model (if one does not exist) and configure it with the default Devise modules. The generator also configures your `config/routes.rb` file to point to the Devise controller.
+
+```console
+$ rails generate devise MODEL
+```
+
+Next, check the MODEL for any additional configuration options you might want to add, such as confirmable or lockable. If you add an option, be sure to inspect the migration file (created by the generator if your ORM supports them) and uncomment the appropriate section.  For example, if you add the confirmable option in the model, you'll need to uncomment the Confirmable section in the migration. 
+
+Then run `rails db:migrate`
+
+You should restart your application after changing Devise's configuration options (this includes stopping spring). Otherwise, you will run into strange errors, for example, users being unable to login and route helpers being undefined.
 
 ### Controller filters and helpers
 
@@ -132,6 +180,8 @@ Devise will create some helpers to use inside your controllers and views. To set
 before_action :authenticate_user!
 ```
 
+For Rails 5, note that `protect_from_forgery` is no longer prepended to the `before_action` chain, so if you have set `authenticate_user` before `protect_from_forgery`, your request will result in "Can't verify CSRF token authenticity." To resolve this, either change the order in which you call them, or use `protect_from_forgery prepend: true`.
+
 If your devise model is something other than User, replace "_user" with "_yourmodel". The same logic applies to the instructions below.
 
 To verify if a user is signed in, use the following helper:
@@ -155,7 +205,7 @@ user_session
 After signing in a user, confirming the account or updating the password, Devise will look for a scoped root path to redirect to. For instance, when using a `:user` resource, the `user_root_path` will be used if it exists; otherwise, the default `root_path` will be used. This means that you need to set the root inside your routes:
 
 ```ruby
-root to: "home#index"
+root to: 'home#index'
 ```
 
 You can also override `after_sign_in_path_for` and `after_sign_out_path_for` to customize your redirect hooks.
@@ -174,19 +224,23 @@ member_session
 
 ### Configuring Models
 
-The Devise method in your models also accepts some options to configure its modules. For example, you can choose the cost of the encryption algorithm with:
+The Devise method in your models also accepts some options to configure its modules. For example, you can choose the cost of the hashing algorithm with:
 
 ```ruby
-devise :database_authenticatable, :registerable, :confirmable, :recoverable, stretches: 20
+devise :database_authenticatable, :registerable, :confirmable, :recoverable, stretches: 12
 ```
 
 Besides `:stretches`, you can define `:pepper`, `:encryptor`, `:confirm_within`, `:remember_for`, `:timeout_in`, `:unlock_in` among other options. For more details, see the initializer file that was created when you invoked the "devise:install" generator described above. This file is usually located at `/config/initializers/devise.rb`.
 
 ### Strong Parameters
 
+![The Parameter Sanitizer API has changed for Devise 4](http://messages.hellobits.com/warning.svg?message=The%20Parameter%20Sanitizer%20API%20has%20changed%20for%20Devise%204)
+
+*For previous Devise versions see https://github.com/plataformatec/devise/tree/3-stable#strong-parameters*
+
 When you customize your own views, you may end up adding new attributes to forms. Rails 4 moved the parameter sanitization from the model to the controller, causing Devise to handle this concern at the controller as well.
 
-There are just three actions in Devise that allow any set of parameters to be passed down to the model, therefore requiring sanitization. Their names and the permitted parameters by default are:
+There are just three actions in Devise that allow any set of parameters to be passed down to the model, therefore requiring sanitization. Their names and default permitted parameters are:
 
 * `sign_in` (`Devise::SessionsController#create`) - Permits only the authentication keys (like `email`)
 * `sign_up` (`Devise::RegistrationsController#create`) - Permits authentication keys plus `password` and `password_confirmation`
@@ -201,18 +255,34 @@ class ApplicationController < ActionController::Base
   protected
 
   def configure_permitted_parameters
-    devise_parameter_sanitizer.for(:sign_up) << :username
+    devise_parameter_sanitizer.permit(:sign_up, keys: [:username])
   end
 end
 ```
 
-The above works for any additional fields where the parameters are simple scalar types. If you have nested attributes (say you're using `accepts_nested_attributes_for`), then you will need to tell devise about those nestings and types. Devise allows you to completely change Devise defaults or invoke custom behaviour by passing a block:
+The above works for any additional fields where the parameters are simple scalar types. If you have nested attributes (say you're using `accepts_nested_attributes_for`), then you will need to tell devise about those nestings and types:
+
+```ruby
+class ApplicationController < ActionController::Base
+  before_action :configure_permitted_parameters, if: :devise_controller?
+
+  protected
+
+  def configure_permitted_parameters
+    devise_parameter_sanitizer.permit(:sign_up, keys: [:first_name, :last_name, address_attributes: [:country, :state, :city, :area, :postal_code]])
+  end
+end
+```
+
+Devise allows you to completely change Devise defaults or invoke custom behaviour by passing a block:
 
 To permit simple scalar values for username and email, use this
 
 ```ruby
 def configure_permitted_parameters
-  devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:username, :email) }
+  devise_parameter_sanitizer.permit(:sign_in) do |user_params|
+    user_params.permit(:username, :email)
+  end
 end
 ```
 
@@ -220,7 +290,9 @@ If you have some checkboxes that express the roles a user may take on registrati
 
 ```ruby
 def configure_permitted_parameters
-  devise_parameter_sanitizer.for(:sign_up) { |u| u.permit({ roles: [] }, :email, :password, :password_confirmation) }
+  devise_parameter_sanitizer.permit(:sign_up) do |user_params|
+    user_params.permit({ roles: [] }, :email, :password, :password_confirmation)
+  end
 end
 ```
 For the list of permitted scalars, and how to declare permitted keys in nested hashes and arrays, see
@@ -231,8 +303,9 @@ If you have multiple Devise models, you may want to set up a different parameter
 
 ```ruby
 class User::ParameterSanitizer < Devise::ParameterSanitizer
-  def sign_in
-    default_params.permit(:username, :email)
+  def initialize(*)
+    super
+    permit(:sign_up, keys: [:username, :email])
   end
 end
 ```
@@ -262,7 +335,7 @@ We built Devise to help you quickly develop an application that uses authenticat
 Since Devise is an engine, all its views are packaged inside the gem. These views will help you get started, but after some time you may want to change them. If this is the case, you just need to invoke the following generator, and it will copy all views to your application:
 
 ```console
-rails generate devise:views
+$ rails generate devise:views
 ```
 
 If you have more than one Devise model in your application (such as `User` and `Admin`), you will notice that Devise uses the same views for all models. Fortunately, Devise offers an easy way to customize views. All you need to do is set `config.scoped_views = true` inside the `config/initializers/devise.rb` file.
@@ -270,14 +343,14 @@ If you have more than one Devise model in your application (such as `User` and `
 After doing so, you will be able to have views based on the role like `users/sessions/new` and `admins/sessions/new`. If no view is found within the scope, Devise will use the default view at `devise/sessions/new`. You can also use the generator to generate scoped views:
 
 ```console
-rails generate devise:views users
+$ rails generate devise:views users
 ```
 
 If you would like to generate only a few sets of views, like the ones for the `registerable` and `confirmable` module,
 you can pass a list of modules to the generator with the `-v` flag.
 
 ```console
-rails generate devise:views -v registrations confirmations
+$ rails generate devise:views -v registrations confirmations
 ```
 
 ### Configuring controllers
@@ -287,7 +360,7 @@ If the customization at the views level is not enough, you can customize each co
 1. Create your custom controllers using the generator which requires a scope:
 
     ```console
-    rails generate devise:controllers [scope]
+    $ rails generate devise:controllers [scope]
     ```
 
     If you specify `users` as the scope, controllers will be created in `app/controllers/users/`.
@@ -306,7 +379,7 @@ If the customization at the views level is not enough, you can customize each co
 2. Tell the router to use this controller:
 
     ```ruby
-    devise_for :users, controllers: { sessions: "users/sessions" }
+    devise_for :users, controllers: { sessions: 'users/sessions' }
     ```
 
 3. Copy the views from `devise/sessions` to `users/sessions`. Since the controller was changed, it won't use the default views located in `devise/sessions`.
@@ -344,21 +417,27 @@ Remember that Devise uses flash messages to let users know if sign in was succes
 Devise also ships with default routes. If you need to customize them, you should probably be able to do it through the devise_for method. It accepts several options like :class_name, :path_prefix and so on, including the possibility to change path names for I18n:
 
 ```ruby
-devise_for :users, path: "auth", path_names: { sign_in: 'login', sign_out: 'logout', password: 'secret', confirmation: 'verification', unlock: 'unblock', registration: 'register', sign_up: 'cmon_let_me_in' }
+devise_for :users, path: 'auth', path_names: { sign_in: 'login', sign_out: 'logout', password: 'secret', confirmation: 'verification', unlock: 'unblock', registration: 'register', sign_up: 'cmon_let_me_in' }
 ```
 
-Be sure to check `devise_for` documentation for details.
+Be sure to check `devise_for` [documentation](http://www.rubydoc.info/github/plataformatec/devise/master/ActionDispatch/Routing/Mapper%3Adevise_for) for details.
 
 If you have the need for more deep customization, for instance to also allow "/sign_in" besides "/users/sign_in", all you need to do is create your routes normally and wrap them in a `devise_scope` block in the router:
 
 ```ruby
 devise_scope :user do
-  get "sign_in", to: "devise/sessions#new"
+  get 'sign_in', to: 'devise/sessions#new'
 end
 ```
 
 This way, you tell Devise to use the scope `:user` when "/sign_in" is accessed. Notice `devise_scope` is also aliased as `as` in your router.
 
+Please note: You will still need to add `devise_for` in your routes in order to use helper methods such as `current_user`.
+
+```ruby
+devise_for :users, skip: :all
+```
+
 ### I18n
 
 Devise uses flash messages with I18n, in conjunction with the flash keys :notice and :alert. To customize your app, you can set up your locale file:
@@ -403,44 +482,94 @@ Caution: Devise Controllers inherit from ApplicationController. If your app uses
 
 ### Test helpers
 
-Devise includes some test helpers for functional specs. In order to use them, you need to include Devise in your functional tests by adding the following to the bottom of your `test/test_helper.rb` file:
+Devise includes some test helpers for controller and integration tests.
+In order to use them, you need to include the respective module in your test
+cases/specs.
+
+### Controller tests
+
+Controller tests require that you include `Devise::Test::ControllerHelpers` on
+your test case or its parent `ActionController::TestCase` superclass.
 
 ```ruby
-class ActionController::TestCase
-  include Devise::TestHelpers
+class PostsControllerTest < ActionController::TestCase
+  include Devise::Test::ControllerHelpers
 end
 ```
 
-If you're using RSpec, you can put the following inside a file named `spec/support/devise.rb` or in your `spec/spec_helper.rb` (or `spec/rails_helper.rb` if you are using rspec-rails):
+If you're using RSpec, you can put the following inside a file named
+`spec/support/devise.rb` or in your `spec/spec_helper.rb` (or
+`spec/rails_helper.rb` if you are using `rspec-rails`):
 
 ```ruby
 RSpec.configure do |config|
-  config.include Devise::TestHelpers, type: :controller
+  config.include Devise::Test::ControllerHelpers, type: :controller
+  config.include Devise::Test::ControllerHelpers, type: :view
 end
 ```
 
 Just be sure that this inclusion is made *after* the `require 'rspec/rails'` directive.
 
-Now you are ready to use the `sign_in` and `sign_out` methods. Such methods have the same signature as in controllers:
+Now you are ready to use the `sign_in` and `sign_out` methods on your controller
+tests:
 
 ```ruby
-sign_in :user, @user   # sign_in(scope, resource)
-sign_in @user          # sign_in(resource)
-
-sign_out :user         # sign_out(scope)
-sign_out @user         # sign_out(resource)
+sign_in @user
+sign_in @user, scope: :admin
 ```
 
-There are two things that are important to keep in mind:
+If you are testing Devise internal controllers or a controller that inherits
+from Devise's, you need to tell Devise which mapping should be used before a
+request. This is necessary because Devise gets this information from the router,
+but since controller tests do not pass through the router, it needs to be stated
+explicitly. For example, if you are testing the user scope, simply use:
 
-1. These helpers are not going to work for integration tests driven by Capybara or Webrat. They are meant to be used with functional tests only. Instead, fill in the form or explicitly set the user in session;
+```ruby
+test 'GET new' do
+  # Mimic the router behavior of setting the Devise scope through the env.
+  @request.env['devise.mapping'] = Devise.mappings[:user]
 
-2. If you are testing Devise internal controllers or a controller that inherits from Devise's, you need to tell Devise which mapping should be used before a request. This is necessary because Devise gets this information from the router, but since functional tests do not pass through the router, it needs to be stated explicitly. For example, if you are testing the user scope, simply use:
+  # Use the sign_in helper to sign in a fixture `User` record.
+  sign_in users(:alice)
 
-    ```ruby
-    @request.env["devise.mapping"] = Devise.mappings[:user]
-    get :new
-    ```
+  get :new
+
+  # assert something
+end
+```
+
+### Integration tests
+
+Integration test helpers are available by including the
+`Devise::Test::IntegrationHelpers` module.
+
+```ruby
+class PostsTests < ActionDispatch::IntegrationTest
+  include Devise::Test::IntegrationHelpers
+end
+```
+
+Now you can use the following `sign_in` and `sign_out` methods in your integration
+tests:
+
+```ruby
+sign_in users(:bob)
+sign_in users(:bob), scope: :admin
+
+sign_out :user
+```
+
+RSpec users can include the `IntegrationHelpers` module on their `:feature` specs.
+
+```ruby
+RSpec.configure do |config|
+  config.include Devise::Test::IntegrationHelpers, type: :feature
+end
+```
+
+Unlike controller tests, integration tests do not need to supply the
+`devise.mapping` `env` value, as the mapping can be inferred by the routes that
+are executed in your tests.
 
 You can read more about testing your Rails 3 - Rails 4 controllers with RSpec in the wiki:
 
@@ -477,7 +606,7 @@ devise :database_authenticatable, :timeoutable
 devise_for :admins
 
 # Inside your protected controller
-before_filter :authenticate_admin!
+before_action :authenticate_admin!
 
 # Inside your controllers and views
 admin_signed_in?
@@ -545,6 +674,6 @@ https://github.com/plataformatec/devise/graphs/contributors
 
 ## License
 
-MIT License. Copyright 2009-2015 Plataformatec. http://plataformatec.com.br
+MIT License. Copyright 2009-2017 Plataformatec. http://plataformatec.com.br
 
 You are not granted rights or licenses to the trademarks of Plataformatec, including without limitation the Devise name or logo.

Rakefile

@@ -1,4 +1,5 @@
 # encoding: UTF-8
+# frozen_string_literal: true
 
 require 'bundler/gem_tasks'
 require 'rake/testtask'

app/controllers/devise/confirmations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Devise::ConfirmationsController < DeviseController
   # GET /resource/confirmation/new
   def new
@@ -22,7 +24,7 @@ class Devise::ConfirmationsController < DeviseController
     yield resource if block_given?
 
     if resource.errors.empty?
-      set_flash_message(:notice, :confirmed) if is_flashing_format?
+      set_flash_message!(:notice, :confirmed)
       respond_with_navigational(resource){ redirect_to after_confirmation_path_for(resource_name, resource) }
     else
       respond_with_navigational(resource.errors, status: :unprocessable_entity){ render :new }

app/controllers/devise/omniauth_callbacks_controller.rb

@@ -1,26 +1,28 @@
+# frozen_string_literal: true
+
 class Devise::OmniauthCallbacksController < DeviseController
-  prepend_before_filter { request.env["devise.skip_timeout"] = true }
+  prepend_before_action { request.env["devise.skip_timeout"] = true }
 
   def passthru
-    render status: 404, text: "Not found. Authentication passthru."
+    render status: 404, plain: "Not found. Authentication passthru."
   end
 
   def failure
-    set_flash_message :alert, :failure, kind: OmniAuth::Utils.camelize(failed_strategy.name), reason: failure_message
+    set_flash_message! :alert, :failure, kind: OmniAuth::Utils.camelize(failed_strategy.name), reason: failure_message
     redirect_to after_omniauth_failure_path_for(resource_name)
   end
 
   protected
 
   def failed_strategy
-    env["omniauth.error.strategy"]
+    request.respond_to?(:get_header) ? request.get_header("omniauth.error.strategy") : request.env["omniauth.error.strategy"]
   end
 
   def failure_message
-    exception = env["omniauth.error"]
+    exception = request.respond_to?(:get_header) ? request.get_header("omniauth.error") : request.env["omniauth.error"]
     error   = exception.error_reason if exception.respond_to?(:error_reason)
     error ||= exception.error        if exception.respond_to?(:error)
-    error ||= env["omniauth.error.type"].to_s
+    error ||= (request.respond_to?(:get_header) ? request.get_header("omniauth.error.type") : request.env["omniauth.error.type"]).to_s
     error.to_s.humanize if error
   end
 

app/controllers/devise/passwords_controller.rb

@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 class Devise::PasswordsController < DeviseController
-  prepend_before_filter :require_no_authentication
+  prepend_before_action :require_no_authentication
   # Render the #edit only if coming from a reset password email link
-  append_before_filter :assert_reset_token_passed, only: :edit
+  append_before_action :assert_reset_token_passed, only: :edit
 
   # GET /resource/password/new
   def new
@@ -36,10 +38,10 @@ class Devise::PasswordsController < DeviseController
       resource.unlock_access! if unlockable?(resource)
       if Devise.sign_in_after_reset_password
         flash_message = resource.active_for_authentication? ? :updated : :updated_not_active
-        set_flash_message(:notice, flash_message) if is_flashing_format?
+        set_flash_message!(:notice, flash_message)
         sign_in(resource_name, resource)
       else
-        set_flash_message(:notice, :updated_not_active) if is_flashing_format?
+        set_flash_message!(:notice, :updated_not_active)
       end
       respond_with resource, location: after_resetting_password_path_for(resource)
     else

app/controllers/devise/registrations_controller.rb

@@ -1,13 +1,15 @@
+# frozen_string_literal: true
+
 class Devise::RegistrationsController < DeviseController
-  prepend_before_filter :require_no_authentication, only: [:new, :create, :cancel]
-  prepend_before_filter :authenticate_scope!, only: [:edit, :update, :destroy]
+  prepend_before_action :require_no_authentication, only: [:new, :create, :cancel]
+  prepend_before_action :authenticate_scope!, only: [:edit, :update, :destroy]
+  prepend_before_action :set_minimum_password_length, only: [:new, :edit]
 
   # GET /resource/sign_up
   def new
-    build_resource({})
-    set_minimum_password_length
+    build_resource
     yield resource if block_given?
-    respond_with self.resource
+    respond_with resource
   end
 
   # POST /resource
@@ -18,11 +20,11 @@ class Devise::RegistrationsController < DeviseController
     yield resource if block_given?
     if resource.persisted?
       if resource.active_for_authentication?
-        set_flash_message :notice, :signed_up if is_flashing_format?
+        set_flash_message! :notice, :signed_up
         sign_up(resource_name, resource)
         respond_with resource, location: after_sign_up_path_for(resource)
       else
-        set_flash_message :notice, :"signed_up_but_#{resource.inactive_message}" if is_flashing_format?
+        set_flash_message! :notice, :"signed_up_but_#{resource.inactive_message}"
         expire_data_after_sign_in!
         respond_with resource, location: after_inactive_sign_up_path_for(resource)
       end
@@ -53,10 +55,11 @@ class Devise::RegistrationsController < DeviseController
           :update_needs_confirmation : :updated
         set_flash_message :notice, flash_key
       end
-      sign_in resource_name, resource, bypass: true
+      bypass_sign_in resource, scope: resource_name
       respond_with resource, location: after_update_path_for(resource)
     else
       clean_up_passwords resource
+      set_minimum_password_length
       respond_with resource
     end
   end
@@ -65,7 +68,7 @@ class Devise::RegistrationsController < DeviseController
   def destroy
     resource.destroy
     Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name)
-    set_flash_message :notice, :destroyed if is_flashing_format?
+    set_flash_message! :notice, :destroyed
     yield resource if block_given?
     respond_with_navigational(resource){ redirect_to after_sign_out_path_for(resource_name) }
   end
@@ -96,8 +99,8 @@ class Devise::RegistrationsController < DeviseController
 
   # Build a devise resource passing in the session. Useful to move
   # temporary session data to the newly created user.
-  def build_resource(hash=nil)
-    self.resource = resource_class.new_with_session(hash || {}, session)
+  def build_resource(hash = {})
+    self.resource = resource_class.new_with_session(hash, session)
   end
 
   # Signs in a user on sign up. You can overwrite this method in your own

app/controllers/devise/sessions_controller.rb

@@ -1,8 +1,10 @@
+# frozen_string_literal: true
+
 class Devise::SessionsController < DeviseController
-  prepend_before_filter :require_no_authentication, only: [:new, :create]
-  prepend_before_filter :allow_params_authentication!, only: :create
-  prepend_before_filter :verify_signed_out_user, only: :destroy
-  prepend_before_filter only: [:create, :destroy] { request.env["devise.skip_timeout"] = true }
+  prepend_before_action :require_no_authentication, only: [:new, :create]
+  prepend_before_action :allow_params_authentication!, only: :create
+  prepend_before_action :verify_signed_out_user, only: :destroy
+  prepend_before_action(only: [:create, :destroy]) { request.env["devise.skip_timeout"] = true }
 
   # GET /resource/sign_in
   def new
@@ -15,7 +17,7 @@ class Devise::SessionsController < DeviseController
   # POST /resource/sign_in
   def create
     self.resource = warden.authenticate!(auth_options)
-    set_flash_message(:notice, :signed_in) if is_flashing_format?
+    set_flash_message!(:notice, :signed_in)
     sign_in(resource_name, resource)
     yield resource if block_given?
     respond_with resource, location: after_sign_in_path_for(resource)
@@ -24,7 +26,7 @@ class Devise::SessionsController < DeviseController
   # DELETE /resource/sign_out
   def destroy
     signed_out = (Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name))
-    set_flash_message :notice, :signed_out if signed_out && is_flashing_format?
+    set_flash_message! :notice, :signed_out if signed_out
     yield if block_given?
     respond_to_on_destroy
   end
@@ -58,7 +60,7 @@ class Devise::SessionsController < DeviseController
   # to the after_sign_out path.
   def verify_signed_out_user
     if all_signed_out?
-      set_flash_message :notice, :already_signed_out if is_flashing_format?
+      set_flash_message! :notice, :already_signed_out
 
       respond_to_on_destroy
     end

app/controllers/devise/unlocks_controller.rb

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 class Devise::UnlocksController < DeviseController
-  prepend_before_filter :require_no_authentication
+  prepend_before_action :require_no_authentication
 
   # GET /resource/unlock/new
   def new
@@ -24,7 +26,7 @@ class Devise::UnlocksController < DeviseController
     yield resource if block_given?
 
     if resource.errors.empty?
-      set_flash_message :notice, :unlocked if is_flashing_format?
+      set_flash_message! :notice, :unlocked
       respond_with_navigational(resource){ redirect_to after_unlock_path_for(resource) }
     else
       respond_with_navigational(resource.errors, status: :unprocessable_entity){ render :new }

app/controllers/devise_controller.rb

@@ -1,14 +1,20 @@
+# frozen_string_literal: true
+
 # All Devise controllers are inherited from here.
 class DeviseController < Devise.parent_controller.constantize
   include Devise::Controllers::ScopedViews
 
-  helper DeviseHelper
+  if respond_to?(:helper)
+    helper DeviseHelper
+  end
 
-  helpers = %w(resource scope_name resource_name signed_in_resource
-               resource_class resource_params devise_mapping)
-  helper_method(*helpers)
+  if respond_to?(:helper_method)
+    helpers = %w(resource scope_name resource_name signed_in_resource
+                 resource_class resource_params devise_mapping)
+    helper_method(*helpers)
+  end
 
-  prepend_before_filter :assert_is_devise_resource!
+  prepend_before_action :assert_is_devise_resource!
   respond_to :html if mimes_for_respond_to.empty?
 
   # Override prefixes to consider the scoped view.
@@ -89,10 +95,10 @@ MESSAGE
     instance_variable_set(:"@#{resource_name}", new_resource)
   end
 
-  # Helper for use in before_filters where no authentication is required.
+  # Helper for use in before_actions where no authentication is required.
   #
   # Example:
-  #   before_filter :require_no_authentication, only: :new
+  #   before_action :require_no_authentication, only: :new
   def require_no_authentication
     assert_is_devise_resource!
     return unless is_navigational_format?
@@ -123,13 +129,13 @@ MESSAGE
     end
 
     if notice
-      set_flash_message :notice, notice if is_flashing_format?
+      set_flash_message! :notice, notice
       true
     end
   end
 
   # Sets the flash message with :key, using I18n. By default you are able
-  # to setup your messages using specific resource scope, and if no message is
+  # to set up your messages using specific resource scope, and if no message is
   # found we look to the default scope. Set the "now" options key to a true
   # value to populate the flash.now hash in lieu of the default flash hash (so
   # the flash message will be available to the current action instead of the
@@ -154,6 +160,13 @@ MESSAGE
     end
   end
 
+  # Sets flash message if is_flashing_format? equals true
+  def set_flash_message!(key, kind, options = {})
+    if is_flashing_format?
+      set_flash_message(key, kind, options)
+    end
+  end
+
   # Sets minimum password length to show to user
   def set_minimum_password_length
     if devise_mapping.validatable?

app/helpers/devise_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DeviseHelper
   # A simple way to show error messages for the current devise resource. If you need
   # to customize this method, you can either overwrite it in your application helpers or

app/mailers/devise/mailer.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 if defined?(ActionMailer)
   class Devise::Mailer < Devise.parent_mailer.constantize
     include Devise::Mailers::Helpers
@@ -17,6 +19,10 @@ if defined?(ActionMailer)
       devise_mail(record, :unlock_instructions, opts)
     end
 
+    def email_changed(record, opts={})
+      devise_mail(record, :email_changed, opts)
+    end
+
     def password_change(record, opts={})
       devise_mail(record, :password_change, opts)
     end

app/views/devise/confirmations/new.html.erb

@@ -5,7 +5,7 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true, value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %> 
+    <%= f.email_field :email, autofocus: true, autocomplete: "email", value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %>
   </div>
 
   <div class="actions">

app/views/devise/mailer/email_changed.html.erb

@@ -0,0 +1,7 @@
+<p>Hello <%= @email %>!</p>
+
+<% if @resource.try(:unconfirmed_email?) %>
+  <p>We're contacting you to notify you that your email is being changed to <%= @resource.unconfirmed_email %>.</p>
+<% else %>
+  <p>We're contacting you to notify you that your email has been changed to <%= @resource.email %>.</p>
+<% end %>

app/views/devise/passwords/new.html.erb

@@ -5,7 +5,7 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true %>
+    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
   </div>
 
   <div class="actions">

app/views/devise/registrations/edit.html.erb

@@ -5,7 +5,7 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true %>
+    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
   </div>
 
   <% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
@@ -15,6 +15,10 @@
   <div class="field">
     <%= f.label :password %> <i>(leave blank if you don't want to change it)</i><br />
     <%= f.password_field :password, autocomplete: "off" %>
+    <% if @minimum_password_length %>
+      <br />
+      <em><%= @minimum_password_length %> characters minimum</em>
+    <% end %>
   </div>
 
   <div class="field">

app/views/devise/registrations/new.html.erb

@@ -5,7 +5,7 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true %>
+    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
   </div>
 
   <div class="field">

app/views/devise/sessions/new.html.erb

@@ -3,7 +3,7 @@
 <%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %>
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true %>
+    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
   </div>
 
   <div class="field">

app/views/devise/unlocks/new.html.erb

@@ -5,7 +5,7 @@
 
   <div class="field">
     <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true %>
+    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
   </div>
 
   <div class="actions">

bin/test

@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+$: << File.expand_path(File.expand_path('../../test', __FILE__))
+
+require 'bundler/setup'
+begin
+  require 'rails/test_unit/minitest_plugin'
+rescue LoadError
+  exec 'rake'
+end
+
+Rails::TestUnitReporter.executable = 'bin/test'
+
+exit Minitest.run(ARGV)

config/locales/en.yml

@@ -23,6 +23,8 @@ en:
         subject: "Reset password instructions"
       unlock_instructions:
         subject: "Unlock instructions"
+      email_changed:
+        subject: "Email Changed"
       password_change:
         subject: "Password Changed"
     omniauth_callbacks:

devise.gemspec

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # -*- encoding: utf-8 -*-
 $:.push File.expand_path("../lib", __FILE__)
 require "devise/version"
@@ -16,12 +18,11 @@ Gem::Specification.new do |s|
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- test/*`.split("\n")
   s.require_paths = ["lib"]
-  s.required_ruby_version = '>= 1.9.3'
+  s.required_ruby_version = '>= 2.1.0'
 
   s.add_dependency("warden", "~> 1.2.3")
   s.add_dependency("orm_adapter", "~> 0.1")
   s.add_dependency("bcrypt", "~> 3.0")
-  s.add_dependency("thread_safe", "~> 0.1")
-  s.add_dependency("railties", ">= 3.2.6", "< 5")
+  s.add_dependency("railties", ">= 4.1.0", "< 5.2")
   s.add_dependency("responders")
 end

gemfiles/Gemfile.rails-3.2-stable

@@ -1,29 +0,0 @@
-source "https://rubygems.org"
-
-gemspec path: '..'
-
-gem "rails", github: 'rails/rails', branch: '3-2-stable'
-gem "omniauth", "~> 1.2.0"
-gem "omniauth-oauth2", "~> 1.1.0"
-gem "rdoc"
-
-group :test do
-  gem "omniauth-facebook"
-  gem "omniauth-openid", "~> 1.0.1"
-  gem "webrat", "0.7.3", require: false
-  gem "mocha", "~> 1.1", require: false
-end
-
-platforms :jruby do
-  gem "activerecord-jdbc-adapter"
-  gem "activerecord-jdbcsqlite3-adapter"
-  gem "jruby-openssl"
-end
-
-platforms :ruby do
-  gem "sqlite3"
-end
-
-group :mongoid do
-  gem "mongoid", "~> 3.0"
-end

gemfiles/Gemfile.rails-3.2-stable.lock

@@ -1,172 +0,0 @@
-GIT
-  remote: git://github.com/rails/rails.git
-  revision: b344986bc3d94ca7821fc5e0eef1874882ac6cbb
-  branch: 3-2-stable
-  specs:
-    actionmailer (3.2.21)
-      actionpack (= 3.2.21)
-      mail (~> 2.5.4)
-    actionpack (3.2.21)
-      activemodel (= 3.2.21)
-      activesupport (= 3.2.21)
-      builder (~> 3.0.0)
-      erubis (~> 2.7.0)
-      journey (~> 1.0.4)
-      rack (~> 1.4.5)
-      rack-cache (~> 1.2)
-      rack-test (~> 0.6.1)
-      sprockets (~> 2.2.1)
-    activemodel (3.2.21)
-      activesupport (= 3.2.21)
-      builder (~> 3.0.0)
-    activerecord (3.2.21)
-      activemodel (= 3.2.21)
-      activesupport (= 3.2.21)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activeresource (3.2.21)
-      activemodel (= 3.2.21)
-      activesupport (= 3.2.21)
-    activesupport (3.2.21)
-      i18n (~> 0.6, >= 0.6.4)
-      multi_json (~> 1.0)
-    rails (3.2.21)
-      actionmailer (= 3.2.21)
-      actionpack (= 3.2.21)
-      activerecord (= 3.2.21)
-      activeresource (= 3.2.21)
-      activesupport (= 3.2.21)
-      bundler (~> 1.0)
-      railties (= 3.2.21)
-    railties (3.2.21)
-      actionpack (= 3.2.21)
-      activesupport (= 3.2.21)
-      rack-ssl (~> 1.3.2)
-      rake (>= 0.8.7)
-      rdoc (~> 3.4)
-      thor (>= 0.14.6, < 2.0)
-
-PATH
-  remote: ..
-  specs:
-    devise (3.5.3)
-      bcrypt (~> 3.0)
-      orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
-      responders
-      thread_safe (~> 0.1)
-      warden (~> 1.2.3)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    arel (3.0.3)
-    bcrypt (3.1.10)
-    builder (3.0.4)
-    erubis (2.7.0)
-    faraday (0.9.1)
-      multipart-post (>= 1.2, < 3)
-    hashie (3.4.0)
-    hike (1.2.3)
-    i18n (0.7.0)
-    journey (1.0.4)
-    json (1.8.2)
-    jwt (1.4.1)
-    mail (2.5.4)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    metaclass (0.0.4)
-    mime-types (1.25.1)
-    mini_portile (0.6.2)
-    mocha (1.1.0)
-      metaclass (~> 0.0.1)
-    mongoid (3.1.6)
-      activemodel (~> 3.2)
-      moped (~> 1.4)
-      origin (~> 1.0)
-      tzinfo (~> 0.3.29)
-    moped (1.5.2)
-    multi_json (1.11.0)
-    multi_xml (0.5.5)
-    multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    oauth2 (0.9.4)
-      faraday (>= 0.8, < 0.10)
-      jwt (~> 1.0)
-      multi_json (~> 1.3)
-      multi_xml (~> 0.5)
-      rack (~> 1.2)
-    omniauth (1.2.2)
-      hashie (>= 1.2, < 4)
-      rack (~> 1.0)
-    omniauth-facebook (1.6.0)
-      omniauth-oauth2 (~> 1.1)
-    omniauth-oauth2 (1.1.2)
-      faraday (>= 0.8, < 0.10)
-      multi_json (~> 1.3)
-      oauth2 (~> 0.9.3)
-      omniauth (~> 1.2)
-    omniauth-openid (1.0.1)
-      omniauth (~> 1.0)
-      rack-openid (~> 1.3.1)
-    origin (1.1.0)
-    orm_adapter (0.5.0)
-    polyglot (0.3.5)
-    rack (1.4.5)
-    rack-cache (1.2)
-      rack (>= 0.4)
-    rack-openid (1.3.1)
-      rack (>= 1.1.0)
-      ruby-openid (>= 2.1.8)
-    rack-ssl (1.3.4)
-      rack
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rake (10.4.2)
-    rdoc (3.12.2)
-      json (~> 1.4)
-    responders (1.1.2)
-      railties (>= 3.2, < 4.2)
-    ruby-openid (2.7.0)
-    sprockets (2.2.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
-    treetop (1.4.15)
-      polyglot
-      polyglot (>= 0.3.1)
-    tzinfo (0.3.43)
-    warden (1.2.4)
-      rack (>= 1.0)
-    webrat (0.7.3)
-      nokogiri (>= 1.2.0)
-      rack (>= 1.0)
-      rack-test (>= 0.5.3)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  activerecord-jdbc-adapter
-  activerecord-jdbcsqlite3-adapter
-  devise!
-  jruby-openssl
-  mocha (~> 1.1)
-  mongoid (~> 3.0)
-  omniauth (~> 1.2.0)
-  omniauth-facebook
-  omniauth-oauth2 (~> 1.1.0)
-  omniauth-openid (~> 1.0.1)
-  rails!
-  rdoc
-  sqlite3
-  webrat (= 0.7.3)
-
-BUNDLED WITH
-   1.10.6

gemfiles/Gemfile.rails-4.0-stable

@@ -1,29 +0,0 @@
-source "https://rubygems.org"
-
-gemspec path: '..'
-
-gem "rails", github: 'rails/rails', branch: '4-0-stable'
-gem "omniauth", "~> 1.2.0"
-gem "omniauth-oauth2", "~> 1.1.0"
-gem "rdoc"
-
-group :test do
-  gem "omniauth-facebook"
-  gem "omniauth-openid", "~> 1.0.1"
-  gem "webrat", "0.7.3", require: false
-  gem "mocha", "~> 1.1", require: false
-end
-
-platforms :jruby do
-  gem "activerecord-jdbc-adapter"
-  gem "activerecord-jdbcsqlite3-adapter"
-  gem "jruby-openssl"
-end
-
-platforms :ruby do
-  gem "sqlite3"
-end
-
-group :mongoid do
-  gem "mongoid", "~> 4.0.0"
-end

gemfiles/Gemfile.rails-4.0-stable.lock

@@ -1,166 +0,0 @@
-GIT
-  remote: git://github.com/rails/rails.git
-  revision: 7ec9c9635bf4d57009135ed11e89d8bf32306d73
-  branch: 4-0-stable
-  specs:
-    actionmailer (4.0.13)
-      actionpack (= 4.0.13)
-      mail (~> 2.5, >= 2.5.4)
-    actionpack (4.0.13)
-      activesupport (= 4.0.13)
-      builder (~> 3.1.0)
-      erubis (~> 2.7.0)
-      rack (~> 1.5.2)
-      rack-test (~> 0.6.2)
-    activemodel (4.0.13)
-      activesupport (= 4.0.13)
-      builder (~> 3.1.0)
-    activerecord (4.0.13)
-      activemodel (= 4.0.13)
-      activerecord-deprecated_finders (~> 1.0.2)
-      activesupport (= 4.0.13)
-      arel (~> 4.0.0)
-    activesupport (4.0.13)
-      i18n (~> 0.6, >= 0.6.9)
-      minitest (~> 4.2)
-      multi_json (~> 1.3)
-      thread_safe (~> 0.1)
-      tzinfo (~> 0.3.37)
-    rails (4.0.13)
-      actionmailer (= 4.0.13)
-      actionpack (= 4.0.13)
-      activerecord (= 4.0.13)
-      activesupport (= 4.0.13)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 4.0.13)
-      sprockets-rails (~> 2.0)
-    railties (4.0.13)
-      actionpack (= 4.0.13)
-      activesupport (= 4.0.13)
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-
-PATH
-  remote: ..
-  specs:
-    devise (3.5.3)
-      bcrypt (~> 3.0)
-      orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
-      responders
-      thread_safe (~> 0.1)
-      warden (~> 1.2.3)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    activerecord-deprecated_finders (1.0.3)
-    arel (4.0.2)
-    bcrypt (3.1.10)
-    bson (2.3.0)
-    builder (3.1.4)
-    connection_pool (2.1.3)
-    erubis (2.7.0)
-    faraday (0.9.1)
-      multipart-post (>= 1.2, < 3)
-    hashie (3.4.0)
-    hike (1.2.3)
-    i18n (0.7.0)
-    jwt (1.4.1)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
-    metaclass (0.0.4)
-    mime-types (2.4.3)
-    mini_portile (0.6.2)
-    minitest (4.7.5)
-    mocha (1.1.0)
-      metaclass (~> 0.0.1)
-    mongoid (4.0.2)
-      activemodel (~> 4.0)
-      moped (~> 2.0.0)
-      origin (~> 2.1)
-      tzinfo (>= 0.3.37)
-    moped (2.0.4)
-      bson (~> 2.2)
-      connection_pool (~> 2.0)
-      optionable (~> 0.2.0)
-    multi_json (1.11.0)
-    multi_xml (0.5.5)
-    multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    oauth2 (0.9.4)
-      faraday (>= 0.8, < 0.10)
-      jwt (~> 1.0)
-      multi_json (~> 1.3)
-      multi_xml (~> 0.5)
-      rack (~> 1.2)
-    omniauth (1.2.2)
-      hashie (>= 1.2, < 4)
-      rack (~> 1.0)
-    omniauth-facebook (1.6.0)
-      omniauth-oauth2 (~> 1.1)
-    omniauth-oauth2 (1.1.2)
-      faraday (>= 0.8, < 0.10)
-      multi_json (~> 1.3)
-      oauth2 (~> 0.9.3)
-      omniauth (~> 1.2)
-    omniauth-openid (1.0.1)
-      omniauth (~> 1.0)
-      rack-openid (~> 1.3.1)
-    optionable (0.2.0)
-    origin (2.1.1)
-    orm_adapter (0.5.0)
-    rack (1.5.2)
-    rack-openid (1.3.1)
-      rack (>= 1.1.0)
-      ruby-openid (>= 2.1.8)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rake (10.4.2)
-    rdoc (4.2.0)
-    responders (1.1.2)
-      railties (>= 3.2, < 4.2)
-    ruby-openid (2.7.0)
-    sprockets (2.12.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.2.4)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
-    tzinfo (0.3.43)
-    warden (1.2.4)
-      rack (>= 1.0)
-    webrat (0.7.3)
-      nokogiri (>= 1.2.0)
-      rack (>= 1.0)
-      rack-test (>= 0.5.3)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  activerecord-jdbc-adapter
-  activerecord-jdbcsqlite3-adapter
-  devise!
-  jruby-openssl
-  mocha (~> 1.1)
-  mongoid (~> 4.0.0)
-  omniauth (~> 1.2.0)
-  omniauth-facebook
-  omniauth-oauth2 (~> 1.1.0)
-  omniauth-openid (~> 1.0.1)
-  rails!
-  rdoc
-  sqlite3
-  webrat (= 0.7.3)
-
-BUNDLED WITH
-   1.10.6

gemfiles/Gemfile.rails-4.1-stable

@@ -1,17 +1,20 @@
+# frozen_string_literal: true
+
 source "https://rubygems.org"
 
-gemspec path: '..'
+gemspec path: ".."
 
-gem "rails", github: 'rails/rails', branch: '4-1-stable'
-gem "omniauth", "~> 1.2.0"
-gem "omniauth-oauth2", "~> 1.1.0"
-gem "rdoc"
+gem "rails", github: "rails/rails", branch: "4-1-stable"
+gem "omniauth"
+gem "omniauth-oauth2"
+gem "rdoc", "~> 5.1"
 
 group :test do
   gem "omniauth-facebook"
-  gem "omniauth-openid", "~> 1.0.1"
+  gem "omniauth-openid"
   gem "webrat", "0.7.3", require: false
   gem "mocha", "~> 1.1", require: false
+  gem 'test_after_commit', require: false
 end
 
 platforms :jruby do
@@ -25,5 +28,5 @@ platforms :ruby do
 end
 
 group :mongoid do
-  gem "mongoid", "~> 4.0.0"
+  gem "mongoid", "~> 4.0"
 end

gemfiles/Gemfile.rails-4.1-stable.lock

@@ -1,148 +1,146 @@
 GIT
   remote: git://github.com/rails/rails.git
-  revision: bf32ec7b8611e6b4c7e9398f7d297a1f0221e9b9
+  revision: 0cad778c2605a5204a05a9f1dbd3344e39f248d8
   branch: 4-1-stable
   specs:
-    actionmailer (4.1.10)
-      actionpack (= 4.1.10)
-      actionview (= 4.1.10)
+    actionmailer (4.1.16)
+      actionpack (= 4.1.16)
+      actionview (= 4.1.16)
       mail (~> 2.5, >= 2.5.4)
-    actionpack (4.1.10)
-      actionview (= 4.1.10)
-      activesupport (= 4.1.10)
-      rack (~> 1.5.2)
-      rack-test (~> 0.6.2)
-    actionview (4.1.10)
-      activesupport (= 4.1.10)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-    activemodel (4.1.10)
-      activesupport (= 4.1.10)
-      builder (~> 3.1)
-    activerecord (4.1.10)
-      activemodel (= 4.1.10)
-      activesupport (= 4.1.10)
-      arel (~> 5.0.0)
-    activesupport (4.1.10)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
-      minitest (~> 5.1)
-      thread_safe (~> 0.1)
-      tzinfo (~> 1.1)
-    rails (4.1.10)
-      actionmailer (= 4.1.10)
-      actionpack (= 4.1.10)
-      actionview (= 4.1.10)
-      activemodel (= 4.1.10)
-      activerecord (= 4.1.10)
-      activesupport (= 4.1.10)
+    rails (4.1.16)
+      actionmailer (= 4.1.16)
+      actionpack (= 4.1.16)
+      actionview (= 4.1.16)
+      activemodel (= 4.1.16)
+      activerecord (= 4.1.16)
+      activesupport (= 4.1.16)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.1.10)
+      railties (= 4.1.16)
       sprockets-rails (~> 2.0)
-    railties (4.1.10)
-      actionpack (= 4.1.10)
-      activesupport (= 4.1.10)
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
 
 PATH
   remote: ..
   specs:
-    devise (3.5.3)
+    devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
+      railties (>= 4.1.0, < 5.2)
       responders
-      thread_safe (~> 0.1)
       warden (~> 1.2.3)
 
 GEM
   remote: https://rubygems.org/
   specs:
+    actionpack (4.1.16)
+      actionview (= 4.1.16)
+      activesupport (= 4.1.16)
+      rack (~> 1.5.2)
+      rack-test (~> 0.6.2)
+    actionview (4.1.16)
+      activesupport (= 4.1.16)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+    activemodel (4.1.16)
+      activesupport (= 4.1.16)
+      builder (~> 3.1)
+    activerecord (4.1.16)
+      activemodel (= 4.1.16)
+      activesupport (= 4.1.16)
+      arel (~> 5.0.0)
+    activesupport (4.1.16)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
     arel (5.0.1.20140414130214)
-    bcrypt (3.1.10)
-    bson (2.3.0)
-    builder (3.2.2)
-    connection_pool (2.1.3)
+    bcrypt (3.1.11)
+    bson (3.2.6)
+    builder (3.2.3)
+    concurrent-ruby (1.0.5)
+    connection_pool (2.2.1)
     erubis (2.7.0)
-    faraday (0.9.1)
+    faraday (0.11.0)
       multipart-post (>= 1.2, < 3)
-    hashie (3.4.0)
-    hike (1.2.3)
-    i18n (0.7.0)
-    json (1.8.2)
-    jwt (1.4.1)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    hashie (3.5.5)
+    i18n (0.8.1)
+    json (1.8.6)
+    jwt (1.5.6)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
     metaclass (0.0.4)
-    mime-types (2.4.3)
-    mini_portile (0.6.2)
-    minitest (5.5.1)
-    mocha (1.1.0)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.10.1)
+    mocha (1.2.1)
       metaclass (~> 0.0.1)
     mongoid (4.0.2)
       activemodel (~> 4.0)
       moped (~> 2.0.0)
       origin (~> 2.1)
       tzinfo (>= 0.3.37)
-    moped (2.0.4)
-      bson (~> 2.2)
+    moped (2.0.7)
+      bson (~> 3.0)
       connection_pool (~> 2.0)
       optionable (~> 0.2.0)
-    multi_json (1.11.0)
-    multi_xml (0.5.5)
+    multi_json (1.12.1)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    oauth2 (0.9.4)
-      faraday (>= 0.8, < 0.10)
+    nokogiri (1.7.0.1)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.3.1)
+      faraday (>= 0.8, < 0.12)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
-    omniauth (1.2.2)
+      rack (>= 1.2, < 3)
+    omniauth (1.4.2)
       hashie (>= 1.2, < 4)
-      rack (~> 1.0)
-    omniauth-facebook (1.6.0)
-      omniauth-oauth2 (~> 1.1)
-    omniauth-oauth2 (1.1.2)
-      faraday (>= 0.8, < 0.10)
-      multi_json (~> 1.3)
-      oauth2 (~> 0.9.3)
+      rack (>= 1.0, < 3)
+    omniauth-facebook (4.0.0)
+      omniauth-oauth2 (~> 1.2)
+    omniauth-oauth2 (1.4.0)
+      oauth2 (~> 1.0)
       omniauth (~> 1.2)
     omniauth-openid (1.0.1)
       omniauth (~> 1.0)
       rack-openid (~> 1.3.1)
     optionable (0.2.0)
-    origin (2.1.1)
+    origin (2.3.0)
     orm_adapter (0.5.0)
-    rack (1.5.2)
+    rack (1.5.5)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rake (10.4.2)
-    rdoc (4.2.0)
+    railties (4.1.16)
+      actionpack (= 4.1.16)
+      activesupport (= 4.1.16)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (12.0.0)
+    rdoc (5.1.0)
     responders (1.1.2)
       railties (>= 3.2, < 4.2)
     ruby-openid (2.7.0)
-    sprockets (2.12.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.2.4)
+    sprockets (3.7.1)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (2.3.3)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
+    sqlite3 (1.3.13)
+    test_after_commit (1.1.0)
+      activerecord (>= 3.2)
+    thor (0.19.4)
+    thread_safe (0.3.6)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    warden (1.2.4)
+    warden (1.2.7)
       rack (>= 1.0)
     webrat (0.7.3)
       nokogiri (>= 1.2.0)
@@ -158,15 +156,16 @@ DEPENDENCIES
   devise!
   jruby-openssl
   mocha (~> 1.1)
-  mongoid (~> 4.0.0)
-  omniauth (~> 1.2.0)
+  mongoid (~> 4.0)
+  omniauth
   omniauth-facebook
-  omniauth-oauth2 (~> 1.1.0)
-  omniauth-openid (~> 1.0.1)
+  omniauth-oauth2
+  omniauth-openid
   rails!
-  rdoc
+  rdoc (~> 5.1)
   sqlite3
+  test_after_commit
   webrat (= 0.7.3)
 
 BUNDLED WITH
-   1.10.6
+   1.15.3

gemfiles/Gemfile.rails-4.2-stable

@@ -1,17 +1,20 @@
+# frozen_string_literal: true
+
 source "https://rubygems.org"
 
-gemspec path: '..'
+gemspec path: ".."
 
-gem "rails", github: 'rails/rails', branch: '4-2-stable'
-gem "omniauth", "~> 1.2.2"
-gem "omniauth-oauth2", "~> 1.2.0"
-gem "rdoc"
+gem "rails", github: "rails/rails", branch: "4-2-stable"
+gem "omniauth"
+gem "omniauth-oauth2"
+gem "rdoc", "~> 5.1"
 
 group :test do
   gem "omniauth-facebook"
-  gem "omniauth-openid", "~> 1.0.1"
+  gem "omniauth-openid"
   gem "webrat", "0.7.3", require: false
   gem "mocha", "~> 1.1", require: false
+  gem 'test_after_commit', require: false
 end
 
 platforms :jruby do
@@ -25,5 +28,5 @@ platforms :ruby do
 end
 
 group :mongoid do
-  gem "mongoid", "~> 4.0.0"
+  gem "mongoid", "~> 4.0"
 end

gemfiles/Gemfile.rails-4.2-stable.lock

@@ -1,136 +1,133 @@
 GIT
   remote: git://github.com/rails/rails.git
-  revision: f12ff8ddab7b199707ec36d72bd72f206f142c8b
+  revision: dc3ae21802c316e1639239d28202db7aa7fb7cac
   branch: 4-2-stable
   specs:
-    actionmailer (4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
+    actionmailer (4.2.8)
+      actionpack (= 4.2.8)
+      actionview (= 4.2.8)
+      activejob (= 4.2.8)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.1)
-      actionview (= 4.2.1)
-      activesupport (= 4.2.1)
+    actionpack (4.2.8)
+      actionview (= 4.2.8)
+      activesupport (= 4.2.8)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.1)
-      activesupport (= 4.2.1)
+    actionview (4.2.8)
+      activesupport (= 4.2.8)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    activejob (4.2.1)
-      activesupport (= 4.2.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.8)
+      activesupport (= 4.2.8)
       globalid (>= 0.3.0)
-    activemodel (4.2.1)
-      activesupport (= 4.2.1)
+    activemodel (4.2.8)
+      activesupport (= 4.2.8)
       builder (~> 3.1)
-    activerecord (4.2.1)
-      activemodel (= 4.2.1)
-      activesupport (= 4.2.1)
+    activerecord (4.2.8)
+      activemodel (= 4.2.8)
+      activesupport (= 4.2.8)
       arel (~> 6.0)
-    activesupport (4.2.1)
+    activesupport (4.2.8)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    rails (4.2.1)
-      actionmailer (= 4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
-      activemodel (= 4.2.1)
-      activerecord (= 4.2.1)
-      activesupport (= 4.2.1)
+    rails (4.2.8)
+      actionmailer (= 4.2.8)
+      actionpack (= 4.2.8)
+      actionview (= 4.2.8)
+      activejob (= 4.2.8)
+      activemodel (= 4.2.8)
+      activerecord (= 4.2.8)
+      activesupport (= 4.2.8)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.1)
+      railties (= 4.2.8)
       sprockets-rails
-    railties (4.2.1)
-      actionpack (= 4.2.1)
-      activesupport (= 4.2.1)
+    railties (4.2.8)
+      actionpack (= 4.2.8)
+      activesupport (= 4.2.8)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
 
 PATH
   remote: ..
   specs:
-    devise (3.5.3)
+    devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
+      railties (>= 4.1.0, < 5.2)
       responders
-      thread_safe (~> 0.1)
       warden (~> 1.2.3)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    arel (6.0.0)
-    bcrypt (3.1.10)
-    bson (2.3.0)
-    builder (3.2.2)
-    connection_pool (2.1.3)
+    arel (6.0.4)
+    bcrypt (3.1.11)
+    bson (3.2.6)
+    builder (3.2.3)
+    concurrent-ruby (1.0.5)
+    connection_pool (2.2.1)
     erubis (2.7.0)
-    faraday (0.9.1)
+    faraday (0.11.0)
       multipart-post (>= 1.2, < 3)
-    globalid (0.3.3)
+    globalid (0.3.7)
       activesupport (>= 4.1.0)
-    hashie (3.4.0)
-    hike (1.2.3)
-    i18n (0.7.0)
-    json (1.8.2)
-    jwt (1.4.1)
-    loofah (2.0.1)
+    hashie (3.5.5)
+    i18n (0.8.1)
+    jwt (1.5.6)
+    loofah (2.0.3)
       nokogiri (>= 1.5.9)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
     metaclass (0.0.4)
-    mime-types (2.4.3)
-    mini_portile (0.6.2)
-    minitest (5.5.1)
-    mocha (1.1.0)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.10.1)
+    mocha (1.2.1)
       metaclass (~> 0.0.1)
     mongoid (4.0.2)
       activemodel (~> 4.0)
       moped (~> 2.0.0)
       origin (~> 2.1)
       tzinfo (>= 0.3.37)
-    moped (2.0.4)
-      bson (~> 2.2)
+    moped (2.0.7)
+      bson (~> 3.0)
       connection_pool (~> 2.0)
       optionable (~> 0.2.0)
-    multi_json (1.11.0)
-    multi_xml (0.5.5)
+    multi_json (1.12.1)
+    multi_xml (0.6.0)
     multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    oauth2 (1.0.0)
-      faraday (>= 0.8, < 0.10)
+    nokogiri (1.7.0.1)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.3.1)
+      faraday (>= 0.8, < 0.12)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
-    omniauth (1.2.2)
-      hashie (>= 1.2, < 4)
-      rack (~> 1.0)
-    omniauth-facebook (2.0.1)
+      rack (>= 1.2, < 3)
+    omniauth (1.6.1)
+      hashie (>= 3.4.6, < 3.6.0)
+      rack (>= 1.6.2, < 3)
+    omniauth-facebook (4.0.0)
       omniauth-oauth2 (~> 1.2)
-    omniauth-oauth2 (1.2.0)
-      faraday (>= 0.8, < 0.10)
-      multi_json (~> 1.3)
+    omniauth-oauth2 (1.4.0)
       oauth2 (~> 1.0)
       omniauth (~> 1.2)
     omniauth-openid (1.0.1)
       omniauth (~> 1.0)
       rack-openid (~> 1.3.1)
     optionable (0.2.0)
-    origin (2.1.1)
+    origin (2.3.0)
     orm_adapter (0.5.0)
-    rack (1.6.0)
+    rack (1.6.5)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
@@ -138,33 +135,33 @@ GEM
       rack (>= 1.0)
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.6)
+    rails-dom-testing (1.0.8)
       activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
+    rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
-    rake (10.4.2)
-    rdoc (4.2.0)
-    responders (2.1.0)
-      railties (>= 4.2.0, < 5)
+    rake (12.0.0)
+    rdoc (5.1.0)
+    responders (2.4.0)
+      actionpack (>= 4.2.0, < 5.3)
+      railties (>= 4.2.0, < 5.3)
     ruby-openid (2.7.0)
-    sprockets (2.12.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.2.4)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (1.4.1)
+    sprockets (3.7.1)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.0)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.13)
+    test_after_commit (1.1.0)
+      activerecord (>= 3.2)
+    thor (0.19.4)
+    thread_safe (0.3.6)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    warden (1.2.4)
+    warden (1.2.7)
       rack (>= 1.0)
     webrat (0.7.3)
       nokogiri (>= 1.2.0)
@@ -180,15 +177,16 @@ DEPENDENCIES
   devise!
   jruby-openssl
   mocha (~> 1.1)
-  mongoid (~> 4.0.0)
-  omniauth (~> 1.2.2)
+  mongoid (~> 4.0)
+  omniauth
   omniauth-facebook
-  omniauth-oauth2 (~> 1.2.0)
-  omniauth-openid (~> 1.0.1)
+  omniauth-oauth2
+  omniauth-openid
   rails!
-  rdoc
+  rdoc (~> 5.1)
   sqlite3
+  test_after_commit
   webrat (= 0.7.3)
 
 BUNDLED WITH
-   1.10.6
+   1.15.3

gemfiles/Gemfile.rails-5.0-stable

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gemspec path: ".."
+
+gem "rails", '~> 5.0.0'
+gem "omniauth"
+gem "omniauth-oauth2"
+gem "rdoc"
+
+gem "activemodel-serializers-xml", github: "rails/activemodel-serializers-xml"
+
+gem "rails-controller-testing"
+
+gem "responders", "~> 2.1"
+
+group :test do
+  gem "omniauth-facebook"
+  gem "omniauth-openid"
+  gem "webrat", "0.7.3", require: false
+  gem "mocha", "~> 1.1", require: false
+  gem 'test_after_commit', require: false
+end
+
+platforms :ruby do
+  gem "sqlite3"
+end
+
+# TODO:
+# group :mongoid do
+#   gem "mongoid", "~> 4.0.0"
+# end

gemfiles/Gemfile.rails-5.0-stable.lock

@@ -0,0 +1,192 @@
+GIT
+  remote: git://github.com/rails/activemodel-serializers-xml.git
+  revision: dd9c0acf26aab111ebc647cd8deb99ebc6946531
+  specs:
+    activemodel-serializers-xml (1.0.1)
+      activemodel (> 5.x)
+      activesupport (> 5.x)
+      builder (~> 3.1)
+
+PATH
+  remote: ..
+  specs:
+    devise (4.4.0)
+      bcrypt (~> 3.0)
+      orm_adapter (~> 0.1)
+      railties (>= 4.1.0, < 5.2)
+      responders
+      warden (~> 1.2.3)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actioncable (5.0.2)
+      actionpack (= 5.0.2)
+      nio4r (>= 1.2, < 3.0)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.0.2)
+      actionpack (= 5.0.2)
+      actionview (= 5.0.2)
+      activejob (= 5.0.2)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.0.2)
+      actionview (= 5.0.2)
+      activesupport (= 5.0.2)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.0.2)
+      activesupport (= 5.0.2)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (5.0.2)
+      activesupport (= 5.0.2)
+      globalid (>= 0.3.6)
+    activemodel (5.0.2)
+      activesupport (= 5.0.2)
+    activerecord (5.0.2)
+      activemodel (= 5.0.2)
+      activesupport (= 5.0.2)
+      arel (~> 7.0)
+    activesupport (5.0.2)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    arel (7.1.4)
+    bcrypt (3.1.11)
+    builder (3.2.3)
+    concurrent-ruby (1.0.5)
+    erubis (2.7.0)
+    faraday (0.11.0)
+      multipart-post (>= 1.2, < 3)
+    globalid (0.4.0)
+      activesupport (>= 4.2.0)
+    hashie (3.5.5)
+    i18n (0.8.1)
+    jwt (1.5.6)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.5)
+      mime-types (>= 1.16, < 4)
+    metaclass (0.0.4)
+    method_source (0.8.2)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.10.1)
+    mocha (1.2.1)
+      metaclass (~> 0.0.1)
+    multi_json (1.12.1)
+    multi_xml (0.6.0)
+    multipart-post (2.0.0)
+    nio4r (2.0.0)
+    nokogiri (1.7.2)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.3.1)
+      faraday (>= 0.8, < 0.12)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      multi_xml (~> 0.5)
+      rack (>= 1.2, < 3)
+    omniauth (1.6.1)
+      hashie (>= 3.4.6, < 3.6.0)
+      rack (>= 1.6.2, < 3)
+    omniauth-facebook (4.0.0)
+      omniauth-oauth2 (~> 1.2)
+    omniauth-oauth2 (1.4.0)
+      oauth2 (~> 1.0)
+      omniauth (~> 1.2)
+    omniauth-openid (1.0.1)
+      omniauth (~> 1.0)
+      rack-openid (~> 1.3.1)
+    orm_adapter (0.5.0)
+    rack (2.0.2)
+    rack-openid (1.3.1)
+      rack (>= 1.1.0)
+      ruby-openid (>= 2.1.8)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (5.0.2)
+      actioncable (= 5.0.2)
+      actionmailer (= 5.0.2)
+      actionpack (= 5.0.2)
+      actionview (= 5.0.2)
+      activejob (= 5.0.2)
+      activemodel (= 5.0.2)
+      activerecord (= 5.0.2)
+      activesupport (= 5.0.2)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 5.0.2)
+      sprockets-rails (>= 2.0.0)
+    rails-controller-testing (1.0.1)
+      actionpack (~> 5.x)
+      actionview (~> 5.x)
+      activesupport (~> 5.x)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.0.3)
+      loofah (~> 2.0)
+    railties (5.0.2)
+      actionpack (= 5.0.2)
+      activesupport (= 5.0.2)
+      method_source
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (12.0.0)
+    rdoc (5.1.0)
+    responders (2.4.0)
+      actionpack (>= 4.2.0, < 5.3)
+      railties (>= 4.2.0, < 5.3)
+    ruby-openid (2.7.0)
+    sprockets (3.7.1)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.0)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.13)
+    test_after_commit (1.1.0)
+      activerecord (>= 3.2)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tzinfo (1.2.3)
+      thread_safe (~> 0.1)
+    warden (1.2.7)
+      rack (>= 1.0)
+    webrat (0.7.3)
+      nokogiri (>= 1.2.0)
+      rack (>= 1.0)
+      rack-test (>= 0.5.3)
+    websocket-driver (0.6.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activemodel-serializers-xml!
+  devise!
+  mocha (~> 1.1)
+  omniauth
+  omniauth-facebook
+  omniauth-oauth2
+  omniauth-openid
+  rails (~> 5.0.0)
+  rails-controller-testing
+  rdoc
+  responders (~> 2.1)
+  sqlite3
+  test_after_commit
+  webrat (= 0.7.3)
+
+BUNDLED WITH
+   1.15.3

guides/bug_report_templates/integration_test.rb

@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+begin
+  require 'bundler/inline'
+rescue LoadError => e
+  $stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
+  raise e
+end
+
+gemfile(true) do
+  source 'https://rubygems.org'
+  # Activate the gem you are reporting the issue against.
+  gem 'rails', '~> 4.2.0'
+  gem 'devise', '~> 4.0'
+  gem 'sqlite3'
+  gem 'byebug'
+end
+
+require 'rack/test'
+require 'action_controller/railtie'
+require 'active_record'
+require 'devise/rails/routes'
+require 'devise/rails/warden_compat'
+
+ActiveRecord::Base.establish_connection( adapter: :sqlite3, database:  ':memory:')
+
+class DeviseCreateUsers < ActiveRecord::Migration
+  def change
+    create_table(:users) do |t|
+      t.string :email,              null: false
+      t.string :encrypted_password, null: true
+      t.timestamps null: false
+    end
+
+  end
+end
+
+Devise.setup do |config|
+  require 'devise/orm/active_record'
+  config.secret_key = 'secret_key_base'
+end
+
+class TestApp < Rails::Application
+  config.root = File.dirname(__FILE__)
+  config.session_store :cookie_store, key: 'cookie_store_key'
+  secrets.secret_token    = 'secret_token'
+  secrets.secret_key_base = 'secret_key_base'
+  config.eager_load = false
+
+  config.middleware.use Warden::Manager do |config|
+    Devise.warden_config = config
+  end
+
+  config.logger = Logger.new($stdout)
+  Rails.logger  = config.logger
+
+end
+
+Rails.application.initialize!
+
+DeviseCreateUsers.migrate(:up)
+
+class User < ActiveRecord::Base
+  devise :database_authenticatable
+end
+
+Rails.application.routes.draw do
+  devise_for :users
+
+  get '/' => 'test#index'
+end
+
+class ApplicationController < ActionController::Base
+end
+
+class TestController < ApplicationController
+  include Rails.application.routes.url_helpers
+
+  before_filter :authenticate_user!
+
+  def index
+    render plain: 'Home'
+  end
+end
+
+require 'minitest/autorun'
+
+class BugTest < ActionDispatch::IntegrationTest
+  include Rack::Test::Methods
+  include Warden::Test::Helpers
+
+  def test_returns_success
+    Warden.test_mode!
+
+    login_as User.create!(email: 'test@test.com', password: 'test123456', password_confirmation: 'test123456')
+
+    get '/'
+    assert last_response.ok?
+  end
+
+  private
+
+  def app
+    Rails.application
+  end
+end

lib/devise.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails'
 require 'active_support/core_ext/numeric/time'
 require 'active_support/dependencies'
@@ -12,19 +14,18 @@ module Devise
   autoload :FailureApp,         'devise/failure_app'
   autoload :OmniAuth,           'devise/omniauth'
   autoload :ParameterFilter,    'devise/parameter_filter'
-  autoload :BaseSanitizer,      'devise/parameter_sanitizer'
   autoload :ParameterSanitizer, 'devise/parameter_sanitizer'
   autoload :TestHelpers,        'devise/test_helpers'
   autoload :TimeInflector,      'devise/time_inflector'
   autoload :TokenGenerator,     'devise/token_generator'
 
   module Controllers
-    autoload :Helpers, 'devise/controllers/helpers'
-    autoload :Rememberable, 'devise/controllers/rememberable'
-    autoload :ScopedViews, 'devise/controllers/scoped_views'
-    autoload :SignInOut, 'devise/controllers/sign_in_out'
-    autoload :StoreLocation, 'devise/controllers/store_location'
-    autoload :UrlHelpers, 'devise/controllers/url_helpers'
+    autoload :Helpers,        'devise/controllers/helpers'
+    autoload :Rememberable,   'devise/controllers/rememberable'
+    autoload :ScopedViews,    'devise/controllers/scoped_views'
+    autoload :SignInOut,      'devise/controllers/sign_in_out'
+    autoload :StoreLocation,  'devise/controllers/store_location'
+    autoload :UrlHelpers,     'devise/controllers/url_helpers'
   end
 
   module Hooks
@@ -36,17 +37,22 @@ module Devise
   end
 
   module Strategies
-    autoload :Base, 'devise/strategies/base'
+    autoload :Base,            'devise/strategies/base'
     autoload :Authenticatable, 'devise/strategies/authenticatable'
   end
 
+  module Test
+    autoload :ControllerHelpers,  'devise/test/controller_helpers'
+    autoload :IntegrationHelpers, 'devise/test/integration_helpers'
+  end
+
   # Constants which holds devise configuration for extensions. Those should
   # not be modified by the "end user" (this is why they are constants).
   ALL         = []
-  CONTROLLERS = ActiveSupport::OrderedHash.new
-  ROUTES      = ActiveSupport::OrderedHash.new
-  STRATEGIES  = ActiveSupport::OrderedHash.new
-  URL_HELPERS = ActiveSupport::OrderedHash.new
+  CONTROLLERS = {}
+  ROUTES      = {}
+  STRATEGIES  = {}
+  URL_HELPERS = {}
 
   # Strategies that do not require user input.
   NO_INPUT = []
@@ -62,9 +68,9 @@ module Devise
   mattr_accessor :rememberable_options
   @@rememberable_options = {}
 
-  # The number of times to encrypt password.
+  # The number of times to hash the password.
   mattr_accessor :stretches
-  @@stretches = 10
+  @@stretches = 11
 
   # The default key used when authenticating over http auth.
   mattr_accessor :http_authentication_key
@@ -84,7 +90,7 @@ module Devise
 
   # Keys that should have whitespace stripped.
   mattr_accessor :strip_whitespace_keys
-  @@strip_whitespace_keys = []
+  @@strip_whitespace_keys = [:email]
 
   # If http authentication is enabled by default.
   mattr_accessor :http_authenticatable
@@ -102,11 +108,11 @@ module Devise
   mattr_accessor :http_authentication_realm
   @@http_authentication_realm = "Application"
 
-  # Email regex used to validate email formats. It simply asserts that
-  # an one (and only one) @ exists in the given string. This is mainly
-  # to give user feedback and not to assert the e-mail validity.
+  # Email regex used to validate email formats. It asserts that there are no
+  # @ symbols or whitespaces in either the localpart or the domain, and that
+  # there is a single @ symbol separating the localpart and the domain.
   mattr_accessor :email_regexp
-  @@email_regexp = /\A[^@\s]+@([^@\s]+\.)+[^@\W]+\z/
+  @@email_regexp = /\A[^@\s]+@[^@\s]+\z/
 
   # Range validation for password length
   mattr_accessor :password_length
@@ -138,19 +144,22 @@ module Devise
   @@confirmation_keys = [:email]
 
   # Defines if email should be reconfirmable.
-  # False by default for backwards compatibility.
   mattr_accessor :reconfirmable
-  @@reconfirmable = false
+  @@reconfirmable = true
 
   # Time interval to timeout the user session without activity.
   mattr_accessor :timeout_in
   @@timeout_in = 30.minutes
 
-  # Used to encrypt password. Please generate one with rake secret.
+  # Used to hash the password. Please generate one with rails secret.
   mattr_accessor :pepper
   @@pepper = nil
 
-  # Used to enable sending notification to user when their password is changed
+  # Used to send notification to the original user email when their email is changed.
+  mattr_accessor :send_email_changed_notification
+  @@send_email_changed_notification = false
+
+  # Used to enable sending notification to user when their password is changed.
   mattr_accessor :send_password_change_notification
   @@send_password_change_notification = false
 
@@ -203,7 +212,7 @@ module Devise
 
   # Skip session storage for the following strategies
   mattr_accessor :skip_session_storage
-  @@skip_session_storage = []
+  @@skip_session_storage = [:http_auth]
 
   # Which formats should be treated as navigational.
   mattr_accessor :navigational_formats
@@ -215,7 +224,7 @@ module Devise
 
   # The default method used while signing out
   mattr_accessor :sign_out_via
-  @@sign_out_via = :get
+  @@sign_out_via = :delete
 
   # The parent controller all Devise controllers inherits from.
   # Defaults to ApplicationController. This should be set early
@@ -244,15 +253,22 @@ module Devise
   mattr_accessor :clean_up_csrf_token_on_authentication
   @@clean_up_csrf_token_on_authentication = true
 
+  # When false, Devise will not attempt to reload routes on eager load.
+  # This can reduce the time taken to boot the app but if your application
+  # requires the Devise mappings to be loaded during boot time the application
+  # won't boot properly.
+  mattr_accessor :reload_routes
+  @@reload_routes = true
+
   # PRIVATE CONFIGURATION
 
   # Store scopes mappings.
   mattr_reader :mappings
-  @@mappings = ActiveSupport::OrderedHash.new
+  @@mappings = {}
 
   # OmniAuth configurations.
   mattr_reader :omniauth_configs
-  @@omniauth_configs = ActiveSupport::OrderedHash.new
+  @@omniauth_configs = {}
 
   # Define a set of modules that are called when a mapping is added.
   mattr_reader :helpers
@@ -276,14 +292,22 @@ module Devise
   mattr_accessor :token_generator
   @@token_generator = nil
 
-  # Default way to setup Devise. Run rails generate devise_install to create
+  def self.rails51? # :nodoc:
+    Rails.gem_version >= Gem::Version.new("5.1.x")
+  end
+
+  def self.activerecord51? # :nodoc:
+    defined?(ActiveRecord) && ActiveRecord.gem_version >= Gem::Version.new("5.1.x")
+  end
+
+  # Default way to set up Devise. Run rails generate devise_install to create
   # a fresh initializer with all configuration values.
   def self.setup
     yield self
   end
 
   class Getter
-    def initialize name
+    def initialize(name)
       @name = name
     end
 
@@ -293,12 +317,8 @@ module Devise
   end
 
   def self.ref(arg)
-    if defined?(ActiveSupport::Dependencies::ClassCache)
-      ActiveSupport::Dependencies::reference(arg)
-      Getter.new(arg)
-    else
-      ActiveSupport::Dependencies.ref(arg)
-    end
+    ActiveSupport::Dependencies.reference(arg)
+    Getter.new(arg)
   end
 
   def self.available_router_name
@@ -419,7 +439,6 @@ module Devise
   #   config.omniauth :github, APP_ID, APP_SECRET
   #
   def self.omniauth(provider, *args)
-    @@helpers << Devise::OmniAuth::UrlHelpers
     config = Devise::OmniAuth::Config.new(provider, args)
     @@omniauth_configs[config.strategy_name.to_sym] = config
   end
@@ -457,10 +476,7 @@ module Devise
           mapping.to.serialize_into_session(record)
         end
 
-        warden_config.serialize_from_session(mapping.name) do |key|
-          # Previous versions contained an additional entry at the beginning of
-          # key with the record's class name.
-          args = key[-2, 2]
+        warden_config.serialize_from_session(mapping.name) do |args|
           mapping.to.serialize_from_session(*args)
         end
       end

lib/devise/controllers/helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Controllers
     # Those helpers are convenience methods added to ApplicationController.
@@ -10,6 +12,11 @@ module Devise
         if respond_to?(:helper_method)
           helper_method :warden, :signed_in?, :devise_controller?
         end
+
+        def append_info_to_payload(payload)
+          super
+          payload[:status] ||= 401 unless payload[:exception]
+        end
       end
 
       module ClassMethods
@@ -30,8 +37,8 @@ module Devise
         #     current_bloggers       # Currently signed in user and admin
         #
         #   Use:
-        #     before_filter :authenticate_blogger!              # Redirects unless either a user or an admin are authenticated
-        #     before_filter ->{ authenticate_blogger! :admin }  # Redirects to the admin login page
+        #     before_action :authenticate_blogger!              # Redirects unless either a user or an admin are authenticated
+        #     before_action ->{ authenticate_blogger! :admin }  # Redirects to the admin login page
         #     current_blogger :user                             # Preferably returns a User if one is signed in
         #
         def devise_group(group_name, opts={})
@@ -76,15 +83,10 @@ module Devise
             end
           METHODS
         end
-
-        def log_process_action(payload)
-          payload[:status] ||= 401 unless payload[:exception]
-          super
-        end
       end
 
       # Define authentication filters and accessor helpers based on mappings.
-      # These filters should be used inside the controllers as before_filters,
+      # These filters should be used inside the controllers as before_actions,
       # so you can control the scope of the user who should be signed in to
       # access that specific controller/action.
       # Example:
@@ -104,8 +106,8 @@ module Devise
       #     admin_session       # Session data available only to the admin scope
       #
       #   Use:
-      #     before_filter :authenticate_user!  # Tell devise to use :user map
-      #     before_filter :authenticate_admin! # Tell devise to use :admin map
+      #     before_action :authenticate_user!  # Tell devise to use :user map
+      #     before_action :authenticate_admin! # Tell devise to use :admin map
       #
       def self.define_helpers(mapping) #:nodoc:
         mapping = mapping.name
@@ -138,27 +140,23 @@ module Devise
 
       # The main accessor for the warden proxy instance
       def warden
-        request.env['warden']
+        request.env['warden'] or raise MissingWarden
       end
 
       # Return true if it's a devise_controller. false to all controllers unless
       # the controllers defined inside devise. Useful if you want to apply a before
       # filter to all controllers, except the ones in devise:
       #
-      #   before_filter :my_filter, unless: :devise_controller?
+      #   before_action :my_filter, unless: :devise_controller?
       def devise_controller?
         is_a?(::DeviseController)
       end
 
-      # Setup a param sanitizer to filter parameters using strong_parameters. See
+      # Set up a param sanitizer to filter parameters using strong_parameters. See
       # lib/devise/parameter_sanitizer.rb for more info. Override this
       # method in your application controller to use your own parameter sanitizer.
       def devise_parameter_sanitizer
-        @devise_parameter_sanitizer ||= if defined?(ActionController::StrongParameters)
-          Devise::ParameterSanitizer.new(resource_class, resource_name, params)
-        else
-          Devise::BaseSanitizer.new(resource_class, resource_name, params)
-        end
+        @devise_parameter_sanitizer ||= Devise::ParameterSanitizer.new(resource_class, resource_name, params)
       end
 
       # Tell warden that params authentication is allowed for that specific page.
@@ -275,16 +273,21 @@ module Devise
 
       private
 
-      def expire_session_data_after_sign_in!
-        ActiveSupport::Deprecation.warn "expire_session_data_after_sign_in! is deprecated " \
-          "in favor of expire_data_after_sign_in!"
-        expire_data_after_sign_in!
-      end
-
       def expire_data_after_sign_out!
         Devise.mappings.each { |_,m| instance_variable_set("@current_#{m.name}", nil) }
         super
       end
     end
   end
+
+  class MissingWarden < StandardError
+    def initialize
+      super "Devise could not find the `Warden::Proxy` instance on your request environment.\n" + \
+        "Make sure that your application is loading Devise and Warden as expected and that " + \
+        "the `Warden::Manager` middleware is present in your middleware stack.\n" + \
+        "If you are seeing this on one of your tests, ensure that your tests are either " + \
+        "executing the Rails middleware stack or that your tests are using the `Devise::Test::ControllerHelpers` " + \
+        "module to inject the `request.env['warden']` object for you."
+    end
+  end
 end

lib/devise/controllers/rememberable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Controllers
     # A module that may be optionally included in a controller in order
@@ -9,11 +11,18 @@ module Devise
         Rails.configuration.session_options.slice(:path, :domain, :secure)
       end
 
+      def remember_me_is_active?(resource)
+        return false unless resource.respond_to?(:remember_me)
+        scope = Devise::Mapping.find_scope!(resource)
+        _, token, generated_at = cookies.signed[remember_key(resource, scope)]
+        resource.remember_me?(token, generated_at)
+      end
+
       # Remembers the given resource by setting up a cookie
       def remember_me(resource)
-        return if env["devise.skip_storage"]
+        return if request.env["devise.skip_storage"]
         scope = Devise::Mapping.find_scope!(resource)
-        resource.remember_me!(resource.extend_remember_period)
+        resource.remember_me!
         cookies.signed[remember_key(resource, scope)] = remember_cookie_values(resource)
       end
 

lib/devise/controllers/scoped_views.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Controllers
     module ScopedViews

lib/devise/controllers/sign_in_out.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Controllers
     # Provide sign in and sign out functionality.
@@ -12,20 +14,15 @@ module Devise
       end
 
       # Sign in a user that already was authenticated. This helper is useful for logging
-      # users in after sign up.
-      #
-      # All options given to sign_in is passed forward to the set_user method in warden.
-      # The only exception is the :bypass option, which bypass warden callbacks and stores
-      # the user straight in session. This option is useful in cases the user is already
-      # signed in, but we want to refresh the credentials in session.
+      # users in after sign up. All options given to sign_in is passed forward
+      # to the set_user method in warden.
       #
       # Examples:
       #
       #   sign_in :user, @user                      # sign_in(scope, resource)
       #   sign_in @user                             # sign_in(resource)
-      #   sign_in @user, event: :authentication  # sign_in(resource, options)
-      #   sign_in @user, store: false            # sign_in(resource, options)
-      #   sign_in @user, bypass: true            # sign_in(resource, options)
+      #   sign_in @user, event: :authentication     # sign_in(resource, options)
+      #   sign_in @user, store: false               # sign_in(resource, options)
       #
       def sign_in(resource_or_scope, *args)
         options  = args.extract_options!
@@ -35,6 +32,13 @@ module Devise
         expire_data_after_sign_in!
 
         if options[:bypass]
+          ActiveSupport::Deprecation.warn(<<-DEPRECATION.strip_heredoc, caller)
+          [Devise] bypass option is deprecated and it will be removed in future version of Devise.
+          Please use bypass_sign_in method instead.
+          Example:
+
+            bypass_sign_in(user)
+          DEPRECATION
           warden.session_serializer.store(resource, scope)
         elsif warden.user(scope) == resource && !options.delete(:force)
           # Do nothing. User already signed in and we are not forcing it.
@@ -44,6 +48,20 @@ module Devise
         end
       end
 
+      # Sign in a user bypassing the warden callbacks and stores the user
+      # straight in session. This option is useful in cases the user is already
+      # signed in, but we want to refresh the credentials in session.
+      #
+      # Examples:
+      #
+      #   bypass_sign_in @user, scope: :user
+      #   bypass_sign_in @user
+      def bypass_sign_in(resource, scope: nil)
+        scope ||= Devise::Mapping.find_scope!(resource)
+        expire_data_after_sign_in!
+        warden.session_serializer.store(resource, scope)
+      end
+
       # Sign out a given user or scope. This helper is useful for signing out a user
       # after deleting accounts. Returns true if there was a logout and false if there
       # is no user logged in on the referred scope
@@ -58,7 +76,6 @@ module Devise
         scope = Devise::Mapping.find_scope!(resource_or_scope)
         user = warden.user(scope: scope, run_callbacks: false) # If there is no user
 
-        warden.raw_session.inspect # Without this inspect here. The session does not clear.
         warden.logout(scope)
         warden.clear_strategies_cache!(scope: scope)
         instance_variable_set(:"@current_#{scope}", nil)

lib/devise/controllers/store_location.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "uri"
 
 module Devise
@@ -29,16 +31,13 @@ module Devise
       # Example:
       #
       #   store_location_for(:user, dashboard_path)
-      #   redirect_to user_omniauth_authorize_path(:facebook)
+      #   redirect_to user_facebook_omniauth_authorize_path
       #
       def store_location_for(resource_or_scope, location)
         session_key = stored_location_key_for(resource_or_scope)
-        uri = parse_uri(location)
-        if uri
-          path = [uri.path.sub(/\A\/+/, '/'), uri.query].compact.join('?')
-          path = [path, uri.fragment].compact.join('#')
-          session[session_key] = path
-        end
+        
+        path = extract_path_from_location(location)
+        session[session_key] = path if path
       end
 
       private
@@ -53,6 +52,25 @@ module Devise
         scope = Devise::Mapping.find_scope!(resource_or_scope)
         "#{scope}_return_to"
       end
+
+      def extract_path_from_location(location)
+        uri = parse_uri(location)
+
+        if uri 
+          path = remove_domain_from_uri(uri)
+          path = add_fragment_back_to_path(uri, path)
+
+          path
+        end
+      end
+
+      def remove_domain_from_uri(uri)
+        [uri.path.sub(/\A\/+/, '/'), uri.query].compact.join('?')
+      end
+
+      def add_fragment_back_to_path(uri, path)
+        [path, uri.fragment].compact.join('#')
+      end
     end
   end
 end

lib/devise/controllers/url_helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Controllers
     # Create url helpers to be used with resource/scope configuration. Acts as

lib/devise/delegator.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   # Checks the scope in the given environment and returns the associated failure app.
   class Delegator

lib/devise/encryptor.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bcrypt'
 
 module Devise
@@ -9,14 +11,14 @@ module Devise
       ::BCrypt::Password.create(password, cost: klass.stretches).to_s
     end
 
-    def self.compare(klass, encrypted_password, password)
-      return false if encrypted_password.blank?
-      bcrypt   = ::BCrypt::Password.new(encrypted_password)
+    def self.compare(klass, hashed_password, password)
+      return false if hashed_password.blank?
+      bcrypt   = ::BCrypt::Password.new(hashed_password)
       if klass.pepper.present?
         password = "#{password}#{klass.pepper}"
       end
       password = ::BCrypt::Engine.hash_secret(password, bcrypt.salt)
-      Devise.secure_compare(password, encrypted_password)
+      Devise.secure_compare(password, hashed_password)
     end
   end
 end

lib/devise/failure_app.rb

@@ -1,12 +1,13 @@
+# frozen_string_literal: true
+
 require "action_controller/metal"
 
 module Devise
   # Failure application that will be called every time :warden is thrown from
-  # any strategy or hook. Responsible for redirect the user to the sign in
-  # page based on current scope and mapping. If no scope is given, redirect
-  # to the default_url.
+  # any strategy or hook. It is responsible for redirecting the user to the sign
+  # in page based on current scope and mapping. If no scope is given, it
+  # redirects to the default_url.
   class FailureApp < ActionController::Metal
-    include ActionController::RackDelegation
     include ActionController::UrlFor
     include ActionController::Redirecting
 
@@ -22,7 +23,7 @@ module Devise
       @respond.call(env)
     end
 
-    # Try retrieving the URL options from the parent controller (usually 
+    # Try retrieving the URL options from the parent controller (usually
     # ApplicationController). Instance methods are not supported at the moment,
     # so only the class-level attribute is used.
     def self.default_url_options(*args)
@@ -51,20 +52,27 @@ module Devise
     end
 
     def recall
-      config = Rails.application.config
-
-      if config.try(:relative_url_root)
-        base_path = Pathname.new(config.relative_url_root)
+      header_info = if relative_url_root?
+        base_path = Pathname.new(relative_url_root)
         full_path = Pathname.new(attempted_path)
 
-        env["SCRIPT_NAME"] = config.relative_url_root
-        env["PATH_INFO"] = '/' + full_path.relative_path_from(base_path).to_s
+        { "SCRIPT_NAME" => relative_url_root,
+          "PATH_INFO" => '/' + full_path.relative_path_from(base_path).to_s }
       else
-        env["PATH_INFO"]  = attempted_path
+        { "PATH_INFO" => attempted_path }
+      end
+
+      header_info.each do | var, value|
+        if request.respond_to?(:set_header)
+          request.set_header(var, value)
+        else
+          request.env[var]  = value
+        end
       end
 
       flash.now[:alert] = i18n_message(:invalid) if is_flashing_format?
-      self.response = recall_app(warden_options[:recall]).call(env)
+      # self.response = recall_app(warden_options[:recall]).call(env)
+      self.response = recall_app(warden_options[:recall]).call(request.env)
     end
 
     def redirect
@@ -95,7 +103,7 @@ module Devise
         options[:scope] = "devise.failure"
         options[:default] = [message]
         auth_keys = scope_class.authentication_keys
-        keys = auth_keys.respond_to?(:keys) ? auth_keys.keys : auth_keys
+        keys = (auth_keys.respond_to?(:keys) ? auth_keys.keys : auth_keys).map { |key| scope_class.human_attribute_name(key) }
         options[:authentication_keys] = keys.join(I18n.translate(:"support.array.words_connector"))
         options = i18n_options(options)
 
@@ -127,19 +135,16 @@ module Devise
 
     def scope_url
       opts  = {}
+
+      # Initialize script_name with nil to prevent infinite loops in
+      # authenticated mounted engines in rails 4.2 and 5.0
+      opts[:script_name] = nil
+
       route = route(scope)
+
       opts[:format] = request_format unless skip_format?
 
-      config = Rails.application.config
-
-      # Rails 4.2 goes into an infinite loop if opts[:script_name] is unset
-      if (Rails::VERSION::MAJOR >= 4) && (Rails::VERSION::MINOR >= 2)
-        opts[:script_name] = (config.relative_url_root if config.respond_to?(:relative_url_root))
-      else
-        if config.respond_to?(:relative_url_root) && config.relative_url_root.present?
-          opts[:script_name] = config.relative_url_root
-        end
-      end
+      opts[:script_name] = relative_url_root if relative_url_root?
 
       router_name = Devise.mappings[scope].router_name || Devise.available_router_name
       context = send(router_name)
@@ -157,12 +162,12 @@ module Devise
       %w(html */*).include? request_format.to_s
     end
 
-    # Choose whether we should respond in a http authentication fashion,
+    # Choose whether we should respond in an HTTP authentication fashion,
     # including 401 and optional headers.
     #
-    # This method allows the user to explicitly disable http authentication
-    # on ajax requests in case they want to redirect on failures instead of
-    # handling the errors on their own. This is useful in case your ajax API
+    # This method allows the user to explicitly disable HTTP authentication
+    # on AJAX requests in case they want to redirect on failures instead of
+    # handling the errors on their own. This is useful in case your AJAX API
     # is the same as your public API and uses a format like JSON (so you
     # cannot mark JSON as a navigational format).
     def http_auth?
@@ -173,7 +178,7 @@ module Devise
       end
     end
 
-    # It does not make sense to send authenticate headers in ajax requests
+    # It doesn't make sense to send authenticate headers in AJAX requests
     # or if the user disabled them.
     def http_auth_header?
       scope_class.http_authenticatable && !request.xhr?
@@ -199,11 +204,11 @@ module Devise
     end
 
     def warden
-      env['warden']
+      request.respond_to?(:get_header) ? request.get_header("warden") : request.env["warden"]
     end
 
     def warden_options
-      env['warden.options']
+      request.respond_to?(:get_header) ? request.get_header("warden.options") : request.env["warden.options"]
     end
 
     def warden_message
@@ -222,10 +227,10 @@ module Devise
       warden_options[:attempted_path]
     end
 
-    # Stores requested uri to redirect the user after signing in. We cannot use
-    # scoped session provided by warden here, since the user is not authenticated
-    # yet, but we still need to store the uri based on scope, so different scopes
-    # would never use the same uri to redirect.
+    # Stores requested URI to redirect the user after signing in. We can't use
+    # the scoped session provided by warden here, since the user is not
+    # authenticated yet, but we still need to store the URI based on scope, so
+    # different scopes would never use the same URI to redirect.
     def store_location!
       store_location_for(scope, attempted_path) if request.get? && !http_auth?
     end
@@ -243,5 +248,17 @@ module Devise
     def request_format
       @request_format ||= request.format.try(:ref)
     end
+
+    def relative_url_root
+      @relative_url_root ||= begin
+        config = Rails.application.config
+
+        config.try(:relative_url_root) || config.action_controller.try(:relative_url_root)
+      end
+    end
+
+    def relative_url_root?
+      relative_url_root.present?
+    end
   end
 end

lib/devise/hooks/activatable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Deny user access whenever their account is not active yet.
 # We need this as hook to validate the user activity on each request
 # and in case the user is using other strategies beside Devise ones.

lib/devise/hooks/csrf_cleaner.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Warden::Manager.after_authentication do |record, warden, options|
   clean_up_for_winning_strategy = !warden.winning_strategy.respond_to?(:clean_up_csrf?) ||
     warden.winning_strategy.clean_up_csrf?

lib/devise/hooks/forgetable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Before logout hook to forget the user in the given scope, if it responds
 # to forget_me! Also clear remember token to ensure the user won't be
 # remembered again. Notice that we forget the user unless the record is not persisted.

lib/devise/hooks/lockable.rb

@@ -1,7 +1,12 @@
+# frozen_string_literal: true
+
 # After each sign in, if resource responds to failed_attempts, sets it to 0
 # This is only triggered when the user is explicitly set (with set_user)
 Warden::Manager.after_set_user except: :fetch do |record, warden, options|
   if record.respond_to?(:failed_attempts) && warden.authenticated?(options[:scope])
-    record.update_attribute(:failed_attempts, 0) unless record.failed_attempts.to_i.zero?
+    unless record.failed_attempts.to_i.zero?
+      record.failed_attempts = 0
+      record.save(validate: false)
+    end
   end
 end

lib/devise/hooks/proxy.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Hooks
     # A small warden proxy so we can remember, forget and
@@ -7,7 +9,7 @@ module Devise
       include Devise::Controllers::SignInOut
 
       attr_reader :warden
-      delegate :cookies, :env, to: :warden
+      delegate :cookies, :request, to: :warden
 
       def initialize(warden)
         @warden = warden

lib/devise/hooks/rememberable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Warden::Manager.after_set_user except: :fetch do |record, warden, options|
   scope = options[:scope]
   if record.respond_to?(:remember_me) && options[:store] != false &&

lib/devise/hooks/timeoutable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Each time a record is set we check whether its session has already timed out
 # or not, based on last request time. If so, the record is logged out and
 # redirected to the sign in page. Also, each time the request comes and the
@@ -19,9 +21,10 @@ Warden::Manager.after_set_user do |record, warden, options|
 
     proxy = Devise::Hooks::Proxy.new(warden)
 
-    if record.timedout?(last_request_at) && !env['devise.skip_timeout']
+    if record.timedout?(last_request_at) &&
+        !env['devise.skip_timeout'] &&
+        !proxy.remember_me_is_active?(record)
       Devise.sign_out_all_scopes ? proxy.sign_out : proxy.sign_out(scope)
-
       throw :warden, scope: scope, message: :timeout
     end
 

lib/devise/hooks/trackable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # After each sign in, update sign in time, sign in count and sign in IP.
 # This is only triggered when the user is explicitly set (with set_user)
 # and on authentication. Retrieving the user from session (:fetch) does

lib/devise/mailers/helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Mailers
     module Helpers
@@ -5,15 +7,16 @@ module Devise
 
       included do
         include Devise::Controllers::ScopedViews
-        attr_reader :scope_name, :resource
       end
 
       protected
 
+      attr_reader :scope_name, :resource
+
       # Configure default email options
-      def devise_mail(record, action, opts={})
+      def devise_mail(record, action, opts = {}, &block)
         initialize_from_record(record)
-        mail headers_for(action, opts)
+        mail headers_for(action, opts), &block
       end
 
       def initialize_from_record(record)
@@ -64,7 +67,7 @@ module Devise
         template_path
       end
 
-      # Setup a subject doing an I18n lookup. At first, it attempts to set a subject
+      # Set up a subject doing an I18n lookup. At first, it attempts to set a subject
       # based on the current mapping:
       #
       #   en:

lib/devise/mapping.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   # Responsible for handling devise mappings and routes configuration. Each
   # resource configured by devise_for in routes is actually creating a mapping

lib/devise/models.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Models
     class MissingAttribute < StandardError
@@ -12,7 +14,7 @@ module Devise
 
     # Creates configuration values for Devise and for the given module.
     #
-    #   Devise::Models.config(Devise::DatabaseAuthenticatable, :stretches)
+    #   Devise::Models.config(Devise::Models::DatabaseAuthenticatable, :stretches)
     #
     # The line above creates:
     #

lib/devise/models/authenticatable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'active_model/version'
 require 'devise/hooks/activatable'
 require 'devise/hooks/csrf_cleaner'
@@ -102,7 +104,7 @@ module Devise
       # and passing a new list of attributes you want to exempt. All attributes
       # given to :except will simply add names to exempt to Devise internal list.
       def serializable_hash(options = nil)
-        options ||= {}
+        options = options.try(:dup) || {}
         options[:except] = Array(options[:except])
 
         if options[:force_except]
@@ -114,6 +116,15 @@ module Devise
         super(options)
       end
 
+      # Redefine inspect using serializable_hash, to ensure we don't accidentally
+      # leak passwords into exceptions.
+      def inspect
+        inspection = serializable_hash.collect do |k,v|
+          "#{k}: #{respond_to?(:attribute_for_inspect) ? attribute_for_inspect(k) : v.inspect}"
+        end
+        "#<#{self.class} #{inspection.join(", ")}>"
+      end
+
       protected
 
       def devise_mailer
@@ -143,13 +154,25 @@ module Devise
       #         if new_record? || changed?
       #           pending_notifications << [notification, args]
       #         else
-      #           devise_mailer.send(notification, self, *args).deliver
+      #           message = devise_mailer.send(notification, self, *args)
+      #           Remove once we move to Rails 4.2+ only.
+      #           if message.respond_to?(:deliver_now)
+      #             message.deliver_now
+      #           else
+      #             message.deliver
+      #           end
       #         end
       #       end
       #
       #       def send_pending_notifications
       #         pending_notifications.each do |notification, args|
-      #           devise_mailer.send(notification, self, *args).deliver
+      #           message = devise_mailer.send(notification, self, *args)
+      #           Remove once we move to Rails 4.2+ only.
+      #           if message.respond_to?(:deliver_now)
+      #             message.deliver_now
+      #           else
+      #             message.deliver
+      #           end
       #         end
       #
       #         # Empty the pending notifications array because the
@@ -235,7 +258,7 @@ module Devise
         #   end
         #
         # Finally, notice that Devise also queries for users in other scenarios
-        # besides authentication, for example when retrieving an user to send
+        # besides authentication, for example when retrieving a user to send
         # an e-mail for password reset. In such cases, find_for_authentication
         # is not called.
         def find_for_authentication(tainted_conditions)
@@ -253,7 +276,11 @@ module Devise
 
         # Find or initialize a record with group of attributes based on a list of required attributes.
         def find_or_initialize_with_errors(required_attributes, attributes, error=:invalid) #:nodoc:
-          attributes = attributes.slice(*required_attributes).with_indifferent_access
+          attributes = if attributes.respond_to? :permit!
+            attributes.slice(*required_attributes).permit!.to_h.with_indifferent_access
+          else
+            attributes.with_indifferent_access.slice(*required_attributes)
+          end
           attributes.delete_if { |key, value| value.blank? }
 
           if attributes.size == required_attributes.size

lib/devise/models/confirmable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Models
     # Confirmable is responsible to verify if an account is already confirmed to
@@ -24,9 +26,11 @@ module Devise
     #     By default allow_unconfirmed_access_for is zero, it means users always have to confirm to sign in.
     #   * +reconfirmable+: requires any email changes to be confirmed (exactly the same way as
     #     initial account confirmation) to be applied. Requires additional unconfirmed_email
-    #     db field to be setup (t.reconfirmable in migrations). Until confirmed, new email is
+    #     db field to be set up (t.reconfirmable in migrations). Until confirmed, new email is
     #     stored in unconfirmed email column, and copied to email column on successful
-    #     confirmation.
+    #     confirmation. Also, when used in conjunction with `send_email_changed_notification`,
+    #     the notification is sent to the original email when the change is requested,
+    #     not when the unconfirmed email is confirmed.
     #   * +confirm_within+: the time before a sent confirmation token becomes invalid.
     #     You can use this to force the user to confirm within a set period of time.
     #     Confirmable will not generate a new token if a repeat confirmation is requested
@@ -40,17 +44,23 @@ module Devise
     #
     module Confirmable
       extend ActiveSupport::Concern
-      include ActionView::Helpers::DateHelper
 
       included do
         before_create :generate_confirmation_token, if: :confirmation_required?
-        after_create  :send_on_create_confirmation_instructions, if: :send_confirmation_notification?
+        after_create :skip_reconfirmation_in_callback!, if: :send_confirmation_notification?
+        if defined?(ActiveRecord) && self.is_a?(ActiveRecord::Base) # ActiveRecord
+          after_commit :send_on_create_confirmation_instructions, on: :create, if: :send_confirmation_notification?
+          after_commit :send_reconfirmation_instructions, on: :update, if: :reconfirmation_required?
+        else # Mongoid
+          after_create :send_on_create_confirmation_instructions, if: :send_confirmation_notification?
+          after_update :send_reconfirmation_instructions, if: :reconfirmation_required?
+        end
         before_update :postpone_email_change_until_confirmation_and_regenerate_confirmation_token, if: :postpone_email_change?
-        after_update  :send_reconfirmation_instructions,  if: :reconfirmation_required?
       end
 
       def initialize(*args, &block)
         @bypass_confirmation_postpone = false
+        @skip_reconfirmation_in_callback = false
         @reconfirmation_required = false
         @skip_confirmation_notification = false
         @raw_confirmation_token = nil
@@ -76,7 +86,7 @@ module Devise
 
           self.confirmed_at = Time.now.utc
 
-          saved = if self.class.reconfirmable && unconfirmed_email.present?
+          saved = if pending_reconfirmation?
             skip_reconfirmation!
             self.email = unconfirmed_email
             self.unconfirmed_email = nil
@@ -92,11 +102,6 @@ module Devise
         end
       end
 
-      def confirm!(args={})
-        ActiveSupport::Deprecation.warn "confirm! is deprecated in favor of confirm"
-        confirm(args)
-      end
-
       # Verifies whether a user is confirmed or not
       def confirmed?
         !!confirmed_at
@@ -165,6 +170,12 @@ module Devise
 
       protected
 
+        # To not require reconfirmation after creating with #save called in a
+        # callback call skip_create_confirmation!
+        def skip_reconfirmation_in_callback!
+          @skip_reconfirmation_in_callback = true
+        end
+
         # A callback method used to deliver confirmation
         # instructions on creation. This can be overridden
         # in models to map to a nice sign up e-mail.
@@ -180,7 +191,7 @@ module Devise
         # Checks if the confirmation for the user is within the limit time.
         # We do this by calculating if the difference between today and the
         # confirmation sent date does not exceed the confirm in time configured.
-        # Confirm_within is a model configuration, must always be an integer value.
+        # allow_unconfirmed_access_for is a model configuration, must always be an integer value.
         #
         # Example:
         #
@@ -216,7 +227,7 @@ module Devise
         #   confirmation_period_expired?  # will always return false
         #
         def confirmation_period_expired?
-          self.class.confirm_within && self.confirmation_sent_at && (Time.now > self.confirmation_sent_at + self.class.confirm_within)
+          self.class.confirm_within && self.confirmation_sent_at && (Time.now.utc > self.confirmation_sent_at.utc + self.class.confirm_within)
         end
 
         # Checks whether the record requires any confirmation.
@@ -235,8 +246,7 @@ module Devise
           if self.confirmation_token && !confirmation_period_expired?
             @raw_confirmation_token = self.confirmation_token
           else
-            raw, _ = Devise.token_generator.generate(self.class, :confirmation_token)
-            self.confirmation_token = @raw_confirmation_token = raw
+            self.confirmation_token = @raw_confirmation_token = Devise.friendly_token
             self.confirmation_sent_at = Time.now.utc
           end
         end
@@ -245,28 +255,64 @@ module Devise
           generate_confirmation_token && save(validate: false)
         end
 
-        def postpone_email_change_until_confirmation_and_regenerate_confirmation_token
-          @reconfirmation_required = true
-          self.unconfirmed_email = self.email
-          self.email = self.email_was
-          self.confirmation_token = nil
-          generate_confirmation_token
+        if Devise.activerecord51?
+          def postpone_email_change_until_confirmation_and_regenerate_confirmation_token
+            @reconfirmation_required = true
+            self.unconfirmed_email = self.email
+            self.email = self.email_in_database
+            self.confirmation_token = nil
+            generate_confirmation_token
+          end
+        else
+          def postpone_email_change_until_confirmation_and_regenerate_confirmation_token
+            @reconfirmation_required = true
+            self.unconfirmed_email = self.email
+            self.email = self.email_was
+            self.confirmation_token = nil
+            generate_confirmation_token
+          end
         end
 
-        def postpone_email_change?
-          postpone = self.class.reconfirmable && email_changed? && !@bypass_confirmation_postpone && self.email.present?
-          @bypass_confirmation_postpone = false
-          postpone
+        if Devise.activerecord51?
+          def postpone_email_change?
+            postpone = self.class.reconfirmable &&
+              will_save_change_to_email? &&
+              !@bypass_confirmation_postpone &&
+              self.email.present? &&
+              (!@skip_reconfirmation_in_callback || !self.email_in_database.nil?)
+            @bypass_confirmation_postpone = false
+            postpone
+          end
+        else
+          def postpone_email_change?
+            postpone = self.class.reconfirmable &&
+              email_changed? &&
+              !@bypass_confirmation_postpone &&
+              self.email.present? &&
+              (!@skip_reconfirmation_in_callback || !self.email_was.nil?)
+            @bypass_confirmation_postpone = false
+            postpone
+          end
         end
 
         def reconfirmation_required?
-          self.class.reconfirmable && @reconfirmation_required && self.email.present?
+          self.class.reconfirmable && @reconfirmation_required && (self.email.present? || self.unconfirmed_email.present?)
         end
 
         def send_confirmation_notification?
           confirmation_required? && !@skip_confirmation_notification && self.email.present?
         end
 
+        # With reconfirmable, notify the original email when the user first
+        # requests the email change, instead of when the change is confirmed.
+        def send_email_changed_notification?
+          if self.class.reconfirmable
+            self.class.send_email_changed_notification && reconfirmation_required?
+          else
+            super
+          end
+        end
+
         # A callback initiated after successfully confirming. This can be
         # used to insert your own logic that is only run after the user successfully
         # confirms.
@@ -315,6 +361,7 @@ module Devise
 
         # Find a record for confirmation by unconfirmed email field
         def find_by_unconfirmed_email_with_errors(attributes = {})
+          attributes = attributes.slice(*confirmation_keys).permit!.to_h if attributes.respond_to? :permit
           unconfirmed_required_attributes = confirmation_keys.map { |k| k == :email ? :unconfirmed_email : k }
           unconfirmed_attributes = attributes.symbolize_keys
           unconfirmed_attributes[:unconfirmed_email] = unconfirmed_attributes.delete(:email)

lib/devise/models/database_authenticatable.rb

@@ -1,24 +1,25 @@
+# frozen_string_literal: true
+
 require 'devise/strategies/database_authenticatable'
 
 module Devise
-  def self.bcrypt(klass, password)
-    ActiveSupport::Deprecation.warn "Devise.bcrypt is deprecated; use Devise::Encryptor.digest instead"
-    Devise::Encryptor.digest(klass, password)
-  end
-
   module Models
-    # Authenticatable Module, responsible for encrypting password and validating
-    # authenticity of a user while signing in.
+    # Authenticatable Module, responsible for hashing the password and
+    # validating the authenticity of a user while signing in.
     #
     # == Options
     #
     # DatabaseAuthenticatable adds the following options to devise_for:
     #
     #   * +pepper+: a random string used to provide a more secure hash. Use
-    #     `rake secret` to generate new keys.
+    #     `rails secret` to generate new keys.
     #
     #   * +stretches+: the cost given to bcrypt.
     #
+    #   * +send_email_changed_notification+: notify original email when it changes.
+    #
+    #   * +send_password_change_notification+: notify email when password changes.
+    #
     # == Examples
     #
     #    User.find(1).valid_password?('password123')         # returns true/false
@@ -27,6 +28,7 @@ module Devise
       extend ActiveSupport::Concern
 
       included do
+        after_update :send_email_changed_notification, if: :send_email_changed_notification?
         after_update :send_password_change_notification, if: :send_password_change_notification?
 
         attr_reader :password, :current_password
@@ -37,7 +39,9 @@ module Devise
         [:encrypted_password] + klass.authentication_keys
       end
 
-      # Generates password encryption based on the given value.
+      # Generates a hashed password based on the given value.
+      # For legacy reasons, we use `encrypted_password` to store
+      # the hashed password.
       def password=(new_password)
         @password = new_password
         self.encrypted_password = password_digest(@password) if @password.present?
@@ -135,27 +139,56 @@ module Devise
         encrypted_password[0,29] if encrypted_password
       end
 
+      if Devise.activerecord51?
+        # Send notification to user when email changes.
+        def send_email_changed_notification
+          send_devise_notification(:email_changed, to: email_before_last_save)
+        end
+      else
+        # Send notification to user when email changes.
+        def send_email_changed_notification
+          send_devise_notification(:email_changed, to: email_was)
+        end
+      end
+
+      # Send notification to user when password changes.
       def send_password_change_notification
         send_devise_notification(:password_change)
       end
 
     protected
 
-      # Digests the password using bcrypt. Custom encryption should override
+      # Hashes the password using bcrypt. Custom hash functions should override
       # this method to apply their own algorithm.
       #
       # See https://github.com/plataformatec/devise-encryptable for examples
-      # of other encryption engines.
+      # of other hashing engines.
       def password_digest(password)
         Devise::Encryptor.digest(self.class, password)
       end
 
-      def send_password_change_notification?
-        self.class.send_password_change_notification && encrypted_password_changed?
+      if Devise.activerecord51?
+        def send_email_changed_notification?
+          self.class.send_email_changed_notification && saved_change_to_email?
+        end
+      else
+        def send_email_changed_notification?
+          self.class.send_email_changed_notification && email_changed?
+        end
+      end
+
+      if Devise.activerecord51?
+        def send_password_change_notification?
+          self.class.send_password_change_notification && saved_change_to_encrypted_password?
+        end
+      else
+        def send_password_change_notification?
+          self.class.send_password_change_notification && encrypted_password_changed?
+        end
       end
 
       module ClassMethods
-        Devise::Models.config(self, :pepper, :stretches, :send_password_change_notification)
+        Devise::Models.config(self, :pepper, :stretches, :send_email_changed_notification, :send_password_change_notification)
 
         # We assume this method already gets the sanitized values from the
         # DatabaseAuthenticatable strategy. If you are using this method on

lib/devise/models/lockable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "devise/hooks/lockable"
 
 module Devise
@@ -7,7 +9,7 @@ module Devise
     # blocked: email and time. The former will send an email to the user when
     # the lock happens, containing a link to unlock its account. The second
     # will unlock the user automatically after some configured time (ie 2.hours).
-    # It's also possible to setup lockable to use both email and time strategies.
+    # It's also possible to set up lockable to use both email and time strategies.
     #
     # == Options
     #
@@ -64,7 +66,7 @@ module Devise
       def send_unlock_instructions
         raw, enc = Devise.token_generator.generate(self.class, :unlock_token)
         self.unlock_token = enc
-        self.save(validate: false)
+        save(validate: false)
         send_devise_notification(:unlock_instructions, raw, {})
         raw
       end
@@ -99,8 +101,7 @@ module Devise
         if super && !access_locked?
           true
         else
-          self.failed_attempts ||= 0
-          self.failed_attempts += 1
+          increment_failed_attempts
           if attempts_exceeded?
             lock_access! unless access_locked?
           else
@@ -109,6 +110,11 @@ module Devise
           false
         end
       end
+      
+      def increment_failed_attempts
+        self.failed_attempts ||= 0
+        self.failed_attempts += 1
+      end
 
       def unauthenticated_message
         # If set to paranoid mode, do not show the locked message because it
@@ -155,6 +161,9 @@ module Devise
         end
 
       module ClassMethods
+        # List of strategies that are enabled/supported if :both is used.
+        BOTH_STRATEGIES = [:time, :email]
+
         # Attempt to find a user by its unlock keys. If a record is found, send new
         # unlock instructions to it. If not user is found, returns a new user
         # with an email not found error.
@@ -181,7 +190,8 @@ module Devise
 
         # Is the unlock enabled for the given unlock strategy?
         def unlock_strategy_enabled?(strategy)
-          [:both, strategy].include?(self.unlock_strategy)
+          self.unlock_strategy == strategy ||
+            (self.unlock_strategy == :both && BOTH_STRATEGIES.include?(strategy))
         end
 
         # Is the lock enabled for the given lock strategy?

lib/devise/models/omniauthable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/omniauth'
 
 module Devise

lib/devise/models/recoverable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Models
 
@@ -27,30 +29,20 @@ module Devise
       end
 
       included do
-        before_update do
-          if (respond_to?(:email_changed?) && email_changed?) || encrypted_password_changed?
-            clear_reset_password_token
-          end
-        end
+        before_update :clear_reset_password_token, if: :clear_reset_password_token?
       end
 
       # Update password saving the record and clearing token. Returns true if
       # the passwords are valid and the record was saved, false otherwise.
       def reset_password(new_password, new_password_confirmation)
-        self.password = new_password
-        self.password_confirmation = new_password_confirmation
-
-        if respond_to?(:after_password_reset) && valid?
-          ActiveSupport::Deprecation.warn "after_password_reset is deprecated"
-          after_password_reset
+        if new_password.present?
+          self.password = new_password
+          self.password_confirmation = new_password_confirmation
+          save
+        else
+          errors.add(:password, :blank)
+          false
         end
-
-        save
-      end
-
-      def reset_password!(new_password, new_password_confirmation)
-        ActiveSupport::Deprecation.warn "reset_password! is deprecated in favor of reset_password"
-        reset_password(new_password, new_password_confirmation)
       end
 
       # Resets reset password token and send reset password instructions by email.
@@ -83,7 +75,7 @@ module Devise
       #   reset_password_period_valid?   # will always return false
       #
       def reset_password_period_valid?
-        reset_password_sent_at && reset_password_sent_at.utc >= self.class.reset_password_within.ago
+        reset_password_sent_at && reset_password_sent_at.utc >= self.class.reset_password_within.ago.utc
       end
 
       protected
@@ -99,7 +91,7 @@ module Devise
 
           self.reset_password_token   = enc
           self.reset_password_sent_at = Time.now.utc
-          self.save(validate: false)
+          save(validate: false)
           raw
         end
 
@@ -107,6 +99,26 @@ module Devise
           send_devise_notification(:reset_password_instructions, token, {})
         end
 
+        if Devise.activerecord51?
+          def clear_reset_password_token?
+            encrypted_password_changed = respond_to?(:will_save_change_to_encrypted_password?) && will_save_change_to_encrypted_password?
+            authentication_keys_changed = self.class.authentication_keys.any? do |attribute|
+              respond_to?("will_save_change_to_#{attribute}?") && send("will_save_change_to_#{attribute}?")
+            end
+
+            authentication_keys_changed || encrypted_password_changed
+          end
+        else
+          def clear_reset_password_token?
+            encrypted_password_changed = respond_to?(:encrypted_password_changed?) && encrypted_password_changed?
+            authentication_keys_changed = self.class.authentication_keys.any? do |attribute|
+              respond_to?("#{attribute}_changed?") && send("#{attribute}_changed?")
+            end
+
+            authentication_keys_changed || encrypted_password_changed
+          end
+        end
+
       module ClassMethods
         # Attempt to find a user by password reset token. If a user is found, return it
         # If a user is not found, return nil

lib/devise/models/registerable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Models
     # Registerable is responsible for everything related to registering a new

lib/devise/models/rememberable.rb

@@ -1,10 +1,12 @@
+# frozen_string_literal: true
+
 require 'devise/strategies/rememberable'
 require 'devise/hooks/rememberable'
 require 'devise/hooks/forgetable'
 
 module Devise
   module Models
-    # Rememberable manages generating and clearing token for remember the user
+    # Rememberable manages generating and clearing token for remembering the user
     # from a saved cookie. Rememberable also has utility methods for dealing
     # with serializing the user into the cookie and back from the cookie, trying
     # to lookup the record based on the saved information.
@@ -39,17 +41,15 @@ module Devise
     module Rememberable
       extend ActiveSupport::Concern
 
-      attr_accessor :remember_me, :extend_remember_period
+      attr_accessor :remember_me
 
       def self.required_fields(klass)
         [:remember_created_at]
       end
 
-      # Generate a new remember token and save the record without validations
-      # if remember expired (token is no longer valid) or extend_remember_period is true
-      def remember_me!(extend_period=false)
-        self.remember_token = self.class.remember_token if generate_remember_token?
-        self.remember_created_at = Time.now.utc if generate_remember_timestamp?(extend_period)
+      def remember_me!
+        self.remember_token ||= self.class.remember_token if respond_to?(:remember_token)
+        self.remember_created_at ||= Time.now.utc
         save(validate: false) if self.changed?
       end
 
@@ -57,19 +57,17 @@ module Devise
       # it exists), and save the record without validations.
       def forget_me!
         return unless persisted?
-        self.remember_token = nil if respond_to?(:remember_token=)
+        self.remember_token = nil if respond_to?(:remember_token)
         self.remember_created_at = nil if self.class.expire_all_remember_me_on_sign_out
         save(validate: false)
       end
 
-      # Remember token should be expired if expiration time not overpass now.
-      def remember_expired?
-        remember_created_at.nil? || (remember_expires_at <= Time.now.utc)
+      def remember_expires_at
+        self.class.remember_for.from_now
       end
 
-      # Remember token expires at created time + remember_for configuration
-      def remember_expires_at
-        remember_created_at + self.class.remember_for
+      def extend_remember_period
+        self.class.extend_remember_period
       end
 
       def rememberable_value
@@ -78,7 +76,7 @@ module Devise
         elsif respond_to?(:authenticatable_salt) && (salt = authenticatable_salt.presence)
           salt
         else
-          raise "authenticable_salt returned nil for the #{self.class.name} model. " \
+          raise "authenticatable_salt returned nil for the #{self.class.name} model. " \
             "In order to use rememberable, you must ensure a password is always set " \
             "or have a remember_token column in your model or implement your own " \
             "rememberable_value in the model with custom logic."
@@ -102,29 +100,47 @@ module Devise
       def after_remembered
       end
 
-    protected
+      def remember_me?(token, generated_at)
+        # TODO: Normalize the JSON type coercion along with the Timeoutable hook
+        # in a single place https://github.com/plataformatec/devise/blob/ffe9d6d406e79108cf32a2c6a1d0b3828849c40b/lib/devise/hooks/timeoutable.rb#L14-L18
+        if generated_at.is_a?(String)
+          generated_at = time_from_json(generated_at)
+        end
 
-      def generate_remember_token? #:nodoc:
-        respond_to?(:remember_token) && remember_expired?
+        # The token is only valid if:
+        # 1. we have a date
+        # 2. the current time does not pass the expiry period
+        # 3. the record has a remember_created_at date
+        # 4. the token date is bigger than the remember_created_at
+        # 5. the token matches
+        generated_at.is_a?(Time) &&
+         (self.class.remember_for.ago < generated_at) &&
+         (generated_at > (remember_created_at || Time.now).utc) &&
+         Devise.secure_compare(rememberable_value, token)
       end
 
-      # Generate a timestamp if extend_remember_period is true, if no remember_token
-      # exists, or if an existing remember token has expired.
-      def generate_remember_timestamp?(extend_period) #:nodoc:
-        extend_period || remember_expired?
+      private
+
+      def time_from_json(value)
+        if value =~ /\A\d+\.\d+\Z/
+          Time.at(value.to_f)
+        else
+          Time.parse(value) rescue nil
+        end
       end
 
       module ClassMethods
         # Create the cookie key using the record id and remember_token
         def serialize_into_cookie(record)
-          [record.to_key, record.rememberable_value]
+          [record.to_key, record.rememberable_value, Time.now.utc.to_f.to_s]
         end
 
         # Recreate the user based on the stored cookie
-        def serialize_from_cookie(id, remember_token)
+        def serialize_from_cookie(*args)
+          id, token, generated_at = *args
+
           record = to_adapter.get(id)
-          record if record && !record.remember_expired? &&
-                    Devise.secure_compare(record.rememberable_value, remember_token)
+          record if record && record.remember_me?(token, generated_at)
         end
 
         # Generate a token checking if one does not already exist in the database.

lib/devise/models/timeoutable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/hooks/timeoutable'
 
 module Devise
@@ -26,7 +28,6 @@ module Devise
 
       # Checks whether the user session has expired based on configured time.
       def timedout?(last_access)
-        return false if remember_exists_and_not_expired?
         !timeout_in.nil? && last_access && last_access <= timeout_in.ago
       end
 
@@ -36,11 +37,6 @@ module Devise
 
       private
 
-      def remember_exists_and_not_expired?
-        return false unless respond_to?(:remember_created_at) && respond_to?(:remember_expired?)
-        remember_created_at && !remember_expired?
-      end
-
       module ClassMethods
         Devise::Models.config(self, :timeout_in)
       end

lib/devise/models/trackable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/hooks/trackable'
 
 module Devise
@@ -30,7 +32,7 @@ module Devise
 
       def update_tracked_fields!(request)
         update_tracked_fields(request)
-        save(validate: false)
+        save
       end
     end
   end

lib/devise/models/validatable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Models
     # Validatable creates all needed validations for a user email and password.
@@ -10,7 +12,7 @@ module Devise
     # Validatable adds the following options to devise_for:
     #
     #   * +email_regexp+: the regular expression used to validate e-mails;
-    #   * +password_length+: a range expressing password length. Defaults to 8..72.
+    #   * +password_length+: a range expressing password length. Defaults to 6..128.
     #
     module Validatable
       # All validations used by this module.
@@ -27,8 +29,13 @@ module Devise
 
         base.class_eval do
           validates_presence_of   :email, if: :email_required?
-          validates_uniqueness_of :email, allow_blank: true, if: :email_changed?
-          validates_format_of     :email, with: email_regexp, allow_blank: true, if: :email_changed?
+          if Devise.activerecord51?
+            validates_uniqueness_of :email, allow_blank: true, if: :will_save_change_to_email?
+            validates_format_of     :email, with: email_regexp, allow_blank: true, if: :will_save_change_to_email?
+          else
+            validates_uniqueness_of :email, allow_blank: true, if: :email_changed?
+            validates_format_of     :email, with: email_regexp, allow_blank: true, if: :email_changed?
+          end
 
           validates_presence_of     :password, if: :password_required?
           validates_confirmation_of :password, if: :password_required?

lib/devise/modules.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'active_support/core_ext/object/with_options'
 
 Devise.with_options model: true do |d|

lib/devise/omniauth.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 begin
   require "omniauth"
   require "omniauth/version"

lib/devise/omniauth/config.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module OmniAuth
     class StrategyNotFound < NameError

lib/devise/omniauth/url_helpers.rb

@@ -1,17 +1,26 @@
+# frozen_string_literal: true
+
 module Devise
   module OmniAuth
     module UrlHelpers
-      def self.define_helpers(mapping)
+      def omniauth_authorize_path(resource_or_scope, provider, *args)
+        scope = Devise::Mapping.find_scope!(resource_or_scope)
+        _devise_route_context.send("#{scope}_#{provider}_omniauth_authorize_path", *args)
       end
 
-      def omniauth_authorize_path(resource_or_scope, *args)
+      def omniauth_authorize_url(resource_or_scope, provider, *args)
         scope = Devise::Mapping.find_scope!(resource_or_scope)
-        _devise_route_context.send("#{scope}_omniauth_authorize_path", *args)
+        _devise_route_context.send("#{scope}_#{provider}_omniauth_authorize_url", *args)
       end
 
-      def omniauth_callback_path(resource_or_scope, *args)
+      def omniauth_callback_path(resource_or_scope, provider, *args)
         scope = Devise::Mapping.find_scope!(resource_or_scope)
-        _devise_route_context.send("#{scope}_omniauth_callback_path", *args)
+        _devise_route_context.send("#{scope}_#{provider}_omniauth_callback_path", *args)
+      end
+
+      def omniauth_callback_url(resource_or_scope, provider, *args)
+        scope = Devise::Mapping.find_scope!(resource_or_scope)
+        _devise_route_context.send("#{scope}_#{provider}_omniauth_callback_url", *args)
       end
     end
   end

lib/devise/orm/active_record.rb

@@ -1,3 +1,7 @@
+# frozen_string_literal: true
+
 require 'orm_adapter/adapters/active_record'
 
-ActiveRecord::Base.extend Devise::Models
+ActiveSupport.on_load(:active_record) do
+  extend Devise::Models
+end

lib/devise/orm/mongoid.rb

@@ -1,3 +1,7 @@
-require 'orm_adapter/adapters/mongoid'
+# frozen_string_literal: true
 
-Mongoid::Document::ClassMethods.send :include, Devise::Models
+ActiveSupport.on_load(:mongoid) do
+  require 'orm_adapter/adapters/mongoid'
+
+  Mongoid::Document::ClassMethods.send :include, Devise::Models
+end

lib/devise/parameter_filter.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   class ParameterFilter
     def initialize(case_insensitive_keys, strip_whitespace_keys)

lib/devise/parameter_sanitizer.rb

@@ -1,99 +1,161 @@
+# frozen_string_literal: true
+
 module Devise
-  class BaseSanitizer
-    attr_reader :params, :resource_name, :resource_class
+  # The +ParameterSanitizer+ deals with permitting specific parameters values
+  # for each +Devise+ scope in the application.
+  #
+  # The sanitizer knows about Devise default parameters (like +password+ and
+  # +password_confirmation+ for the `RegistrationsController`), and you can
+  # extend or change the permitted parameters list on your controllers.
+  #
+  # === Permitting new parameters
+  #
+  # You can add new parameters to the permitted list using the +permit+ method
+  # in a +before_action+ method, for instance.
+  #
+  #    class ApplicationController < ActionController::Base
+  #      before_action :configure_permitted_parameters, if: :devise_controller?
+  #
+  #      protected
+  #
+  #      def configure_permitted_parameters
+  #        # Permit the `subscribe_newsletter` parameter along with the other
+  #        # sign up parameters.
+  #        devise_parameter_sanitizer.permit(:sign_up, keys: [:subscribe_newsletter])
+  #      end
+  #    end
+  #
+  # Using a block yields an +ActionController::Parameters+ object so you can
+  # permit nested parameters and have more control over how the parameters are
+  # permitted in your controller.
+  #
+  #    def configure_permitted_parameters
+  #      devise_parameter_sanitizer.permit(:sign_up) do |user|
+  #        user.permit(newsletter_preferences: [])
+  #      end
+  #    end
+  class ParameterSanitizer
+    DEFAULT_PERMITTED_ATTRIBUTES = {
+      sign_in: [:password, :remember_me],
+      sign_up: [:password, :password_confirmation],
+      account_update: [:password, :password_confirmation, :current_password]
+    }
 
     def initialize(resource_class, resource_name, params)
-      @resource_class = resource_class
-      @resource_name  = resource_name
+      @auth_keys      = extract_auth_keys(resource_class)
       @params         = params
-      @blocks         = Hash.new
-    end
+      @resource_name  = resource_name
+      @permitted      = {}
 
-    def for(kind, &block)
-      if block_given?
-        @blocks[kind] = block
-      else
-        default_for(kind)
+      DEFAULT_PERMITTED_ATTRIBUTES.each_pair do |action, keys|
+        permit(action, keys: keys)
       end
     end
 
-    def sanitize(kind)
-      if block = @blocks[kind]
-        block.call(default_params)
+    # Sanitize the parameters for a specific +action+.
+    #
+    # === Arguments
+    #
+    # * +action+ - A +Symbol+ with the action that the controller is
+    #   performing, like +sign_up+, +sign_in+, etc.
+    #
+    # === Examples
+    #
+    #    # Inside the `RegistrationsController#create` action.
+    #    resource = build_resource(devise_parameter_sanitizer.sanitize(:sign_up))
+    #    resource.save
+    #
+    # Returns an +ActiveSupport::HashWithIndifferentAccess+ with the permitted
+    # attributes.
+    def sanitize(action)
+      permissions = @permitted[action]
+
+      if permissions.respond_to?(:call)
+        cast_to_hash permissions.call(default_params)
+      elsif permissions.present?
+        cast_to_hash permit_keys(default_params, permissions)
       else
-        default_sanitize(kind)
+        unknown_action!(action)
+      end
+    end
+
+    # Add or remove new parameters to the permitted list of an +action+.
+    #
+    # === Arguments
+    #
+    # * +action+ - A +Symbol+ with the action that the controller is
+    #   performing, like +sign_up+, +sign_in+, etc.
+    # * +keys:+     - An +Array+ of keys that also should be permitted.
+    # * +except:+   - An +Array+ of keys that shouldn't be permitted.
+    # * +block+     - A block that should be used to permit the action
+    #   parameters instead of the +Array+ based approach. The block will be
+    #   called with an +ActionController::Parameters+ instance.
+    #
+    # === Examples
+    #
+    #   # Adding new parameters to be permitted in the `sign_up` action.
+    #   devise_parameter_sanitizer.permit(:sign_up, keys: [:subscribe_newsletter])
+    #
+    #   # Removing the `password` parameter from the `account_update` action.
+    #   devise_parameter_sanitizer.permit(:account_update, except: [:password])
+    #
+    #   # Using the block form to completely override how we permit the
+    #   # parameters for the `sign_up` action.
+    #   devise_parameter_sanitizer.permit(:sign_up) do |user|
+    #     user.permit(:email, :password, :password_confirmation)
+    #   end
+    #
+    #
+    # Returns nothing.
+    def permit(action, keys: nil, except: nil, &block)
+      if block_given?
+        @permitted[action] = block
+      end
+
+      if keys.present?
+        @permitted[action] ||= @auth_keys.dup
+        @permitted[action].concat(keys)
+      end
+
+      if except.present?
+        @permitted[action] ||= @auth_keys.dup
+        @permitted[action] = @permitted[action] - except
       end
     end
 
     private
 
-    def default_for(kind)
-      raise ArgumentError, "a block is expected in Devise base sanitizer"
-    end
-
-    def default_sanitize(kind)
-      default_params
+    # Cast a sanitized +ActionController::Parameters+ to a +HashWithIndifferentAccess+
+    # that can be used elsewhere.
+    #
+    # Returns an +ActiveSupport::HashWithIndifferentAccess+.
+    def cast_to_hash(params)
+      # TODO: Remove the `with_indifferent_access` method call when we only support Rails 5+.
+      params && params.to_h.with_indifferent_access
     end
 
     def default_params
-      params.fetch(resource_name, {})
-    end
-  end
-
-  class ParameterSanitizer < BaseSanitizer
-    def initialize(*)
-      super
-      @permitted = Hash.new { |h,k| h[k] = attributes_for(k) }
+      @params.fetch(@resource_name, {})
     end
 
-    def sign_in
-      permit self.for(:sign_in)
+    def permit_keys(parameters, keys)
+      parameters.permit(*keys)
     end
 
-    def sign_up
-      permit self.for(:sign_up)
+    def extract_auth_keys(klass)
+      auth_keys = klass.authentication_keys
+
+      auth_keys.respond_to?(:keys) ? auth_keys.keys : auth_keys
     end
 
-    def account_update
-      permit self.for(:account_update)
-    end
+    def unknown_action!(action)
+      raise NotImplementedError, <<-MESSAGE.strip_heredoc
+        "Devise doesn't know how to sanitize parameters for '#{action}'".
+        If you want to define a new set of parameters to be sanitized use the
+        `permit` method first:
 
-    private
-
-    # TODO: We do need to flatten so it works with strong_parameters
-    # gem. We should drop it once we move to Rails 4 only support.
-    def permit(keys)
-      default_params.permit(*Array(keys))
-    end
-
-    # Change for(kind) to return the values in the @permitted
-    # hash, allowing the developer to customize at runtime.
-    def default_for(kind)
-      @permitted[kind] || raise("No sanitizer provided for #{kind}")
-    end
-
-    def default_sanitize(kind)
-      if respond_to?(kind, true)
-        send(kind)
-      else
-        raise NotImplementedError, "Devise doesn't know how to sanitize parameters for #{kind}"
-      end
-    end
-
-    def attributes_for(kind)
-      case kind
-      when :sign_in
-        auth_keys + [:password, :remember_me]
-      when :sign_up
-        auth_keys + [:password, :password_confirmation]
-      when :account_update
-        auth_keys + [:password, :password_confirmation, :current_password]
-      end
-    end
-
-    def auth_keys
-      @auth_keys ||= @resource_class.authentication_keys.respond_to?(:keys) ?
-                       @resource_class.authentication_keys.keys : @resource_class.authentication_keys
+          devise_parameter_sanitizer.permit(:#{action}, keys: [:param1, :param2, :param3])
+      MESSAGE
     end
   end
 end

lib/devise/rails.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/rails/routes'
 require 'devise/rails/warden_compat'
 
@@ -11,7 +13,9 @@ module Devise
     end
 
     # Force routes to be loaded if we are doing any eager load.
-    config.before_eager_load { |app| app.reload_routes! }
+    config.before_eager_load do |app|
+      app.reload_routes! if Devise.reload_routes
+    end
 
     initializer "devise.url_helpers" do
       Devise.include_helpers(Devise::Controllers)
@@ -39,18 +43,9 @@ module Devise
       Devise.token_generator ||=
         if secret_key = Devise.secret_key
           Devise::TokenGenerator.new(
-            Devise::CachingKeyGenerator.new(Devise::KeyGenerator.new(secret_key))
+            ActiveSupport::CachingKeyGenerator.new(ActiveSupport::KeyGenerator.new(secret_key))
           )
         end
     end
-
-    initializer "devise.fix_routes_proxy_missing_respond_to_bug" do
-      # Deprecate: Remove once we move to Rails 4 only.
-      ActionDispatch::Routing::RoutesProxy.class_eval do
-        def respond_to?(method, include_private = false)
-          super || routes.url_helpers.respond_to?(method)
-        end
-      end
-    end
   end
 end

lib/devise/rails/routes.rb

@@ -1,13 +1,12 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/object/try"
 require "active_support/core_ext/hash/slice"
 
-module ActionDispatch::Routing
-  class RouteSet #:nodoc:
-    # Ensure Devise modules are included only after loading routes, because we
-    # need devise_for mappings already declared to create filters and helpers.
-    def finalize_with_devise!
-      result = finalize_without_devise!
-
+module Devise
+  module RouteSet
+    def finalize!
+      result = super
       @devise_finalized ||= begin
         if Devise.router_name.nil? && defined?(@devise_finalized) && self != Rails.application.try(:routes)
           warn "[DEVISE] We have detected that you are using devise_for inside engine routes. " \
@@ -21,10 +20,16 @@ module ActionDispatch::Routing
         Devise.regenerate_helpers!
         true
       end
-
       result
     end
-    alias_method_chain :finalize!, :devise
+  end
+end
+
+module ActionDispatch::Routing
+  class RouteSet #:nodoc:
+    # Ensure Devise modules are included only after loading routes, because we
+    # need devise_for mappings already declared to create filters and helpers.
+    prepend Devise::RouteSet
   end
 
   class Mapper
@@ -84,17 +89,17 @@ module ActionDispatch::Routing
     #
     # You can configure your routes with some options:
     #
-    #  * class_name: setup a different class to be looked up by devise, if it cannot be
+    #  * class_name: set up a different class to be looked up by devise, if it cannot be
     #    properly found by the route name.
     #
     #      devise_for :users, class_name: 'Account'
     #
-    #  * path: allows you to setup path name that will be used, as rails routes does.
-    #    The following route configuration would setup your route as /accounts instead of /users:
+    #  * path: allows you to set up path name that will be used, as rails routes does.
+    #    The following route configuration would set up your route as /accounts instead of /users:
     #
     #      devise_for :users, path: 'accounts'
     #
-    #  * singular: setup the singular name for the given resource. This is used as the helper methods
+    #  * singular: set up the singular name for the given resource. This is used as the helper methods
     #    names in controller ("authenticate_#{singular}!", "#{singular}_signed_in?", "current_#{singular}"
     #    and "#{singular}_session"), as the scope name in routes and as the scope given to warden.
     #
@@ -105,7 +110,7 @@ module ActionDispatch::Routing
     #      end
     #
     #      class ManagerController < ApplicationController
-    #        before_filter authenticate_manager!
+    #        before_action authenticate_manager!
     #
     #        def show
     #          @manager = current_manager
@@ -335,7 +340,7 @@ module ActionDispatch::Routing
 
     # Sets the devise scope to be used in the controller. If you have custom routes,
     # you are required to call this method (also aliased as :as) in order to specify
-    # to which controller it is targetted.
+    # to which controller it is targeted.
     #
     #   as :user do
     #     get "sign_in", to: "devise/sessions#new"
@@ -428,27 +433,29 @@ options to another `devise_for` call outside the scope. Here is an example:
     end
 ERROR
         end
-
-        path, @scope[:path] = @scope[:path], nil
+        current_scope = @scope.dup
+        if @scope.respond_to? :new
+          @scope = @scope.new path: nil
+        else
+          @scope[:path] = nil
+        end
         path_prefix = Devise.omniauth_path_prefix || "/#{mapping.fullpath}/auth".squeeze("/")
 
         set_omniauth_path_prefix!(path_prefix)
 
-        providers = Regexp.union(mapping.to.omniauth_providers.map(&:to_s))
+        mapping.to.omniauth_providers.each do |provider|
+          match "#{path_prefix}/#{provider}",
+            to: "#{controllers[:omniauth_callbacks]}#passthru",
+            as: "#{provider}_omniauth_authorize",
+            via: [:get, :post]
 
-        match "#{path_prefix}/:provider",
-          constraints: { provider: providers },
-          to: "#{controllers[:omniauth_callbacks]}#passthru",
-          as: :omniauth_authorize,
-          via: [:get, :post]
-
-        match "#{path_prefix}/:action/callback",
-          constraints: { action: providers },
-          to: "#{controllers[:omniauth_callbacks]}#:action",
-          as: :omniauth_callback,
-          via: [:get, :post]
+          match "#{path_prefix}/#{provider}/callback",
+            to: "#{controllers[:omniauth_callbacks]}##{provider}",
+            as: "#{provider}_omniauth_callback",
+            via: [:get, :post]
+        end
       ensure
-        @scope[:path] = path
+        @scope = current_scope
       end
 
       def with_devise_exclusive_scope(new_path, new_as, options) #:nodoc:
@@ -457,7 +464,11 @@ ERROR
         exclusive = { as: new_as, path: new_path, module: nil }
         exclusive.merge!(options.slice(:constraints, :defaults, :options))
 
-        exclusive.each_pair { |key, value| @scope[key] = value }
+        if @scope.respond_to? :new
+          @scope = @scope.new exclusive
+        else
+          exclusive.each_pair { |key, value| @scope[key] = value }
+        end
         yield
       ensure
         @scope = current_scope

lib/devise/rails/warden_compat.rb

@@ -1,19 +1,12 @@
+# frozen_string_literal: true
+
 module Warden::Mixins::Common
   def request
     @request ||= ActionDispatch::Request.new(env)
   end
 
-  # Deprecate: Remove this check once we move to Rails 4 only.
-  NULL_STORE =
-    defined?(ActionController::RequestForgeryProtection::ProtectionMethods::NullSession::NullSessionHash) ?
-      ActionController::RequestForgeryProtection::ProtectionMethods::NullSession::NullSessionHash : nil
-
   def reset_session!
-    # Calling reset_session on NULL_STORE causes it fail.
-    # This is a bug that needs to be fixed in Rails.
-    unless NULL_STORE && request.session.is_a?(NULL_STORE)
-      request.reset_session
-    end
+    request.reset_session
   end
 
   def cookies

lib/devise/strategies/authenticatable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/strategies/base'
 
 module Devise

lib/devise/strategies/base.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Strategies
     # Base strategy for Devise. Responsible for verifying correct scope and mapping.

lib/devise/strategies/database_authenticatable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/strategies/authenticatable'
 
 module Devise
@@ -6,15 +8,15 @@ module Devise
     class DatabaseAuthenticatable < Authenticatable
       def authenticate!
         resource  = password.present? && mapping.to.find_for_database_authentication(authentication_hash)
-        encrypted = false
+        hashed = false
 
-        if validate(resource){ encrypted = true; resource.valid_password?(password) }
+        if validate(resource){ hashed = true; resource.valid_password?(password) }
           remember_me(resource)
           resource.after_database_authentication
           success!(resource)
         end
 
-        mapping.to.new.password = password if !encrypted && Devise.paranoid
+        mapping.to.new.password = password if !hashed && Devise.paranoid
         fail(:not_found_in_database) unless resource
       end
     end

lib/devise/strategies/rememberable.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'devise/strategies/authenticatable'
 
 module Devise
@@ -25,8 +27,7 @@ module Devise
         end
 
         if validate(resource)
-          remember_me(resource)
-          extend_remember_me_period(resource)
+          remember_me(resource) if extend_remember_me?(resource)
           resource.after_remembered
           success!(resource)
         end
@@ -43,10 +44,8 @@ module Devise
 
     private
 
-      def extend_remember_me_period(resource)
-        if resource.respond_to?(:extend_remember_period=)
-          resource.extend_remember_period = mapping.to.extend_remember_period
-        end
+      def extend_remember_me?(resource)
+        resource.respond_to?(:extend_remember_period) && resource.extend_remember_period
       end
 
       def remember_me?

lib/devise/test/controller_helpers.rb

@@ -0,0 +1,164 @@
+# frozen_string_literal: true
+
+module Devise
+  module Test
+    # `Devise::Test::ControllerHelpers` provides a facility to test controllers
+    # in isolation when using `ActionController::TestCase` allowing you to
+    # quickly sign_in or sign_out a user. Do not use
+    # `Devise::Test::ControllerHelpers` in integration tests.
+    #
+    # Examples
+    #
+    #  class PostsTest < ActionController::TestCase
+    #    include Devise::Test::ControllerHelpers
+    #
+    #    test 'authenticated users can GET index' do
+    #      sign_in users(:bob)
+    #
+    #      get :index
+    #      assert_response :success
+    #    end
+    #  end
+    #
+    # Important: you should not test Warden specific behavior (like callbacks)
+    # using `Devise::Test::ControllerHelpers` since it is a stub of the actual
+    # behavior. Such callbacks should be tested in your integration suite instead.
+    module ControllerHelpers
+      extend ActiveSupport::Concern
+
+      included do
+        setup :setup_controller_for_warden, :warden
+      end
+
+      # Override process to consider warden.
+      def process(*)
+        _catch_warden { super }
+
+        @response
+      end
+
+      # We need to set up the environment variables and the response in the controller.
+      def setup_controller_for_warden #:nodoc:
+        @request.env['action_controller.instance'] = @controller
+      end
+
+      # Quick access to Warden::Proxy.
+      def warden #:nodoc:
+        @request.env['warden'] ||= begin
+          manager = Warden::Manager.new(nil) do |config|
+            config.merge! Devise.warden_config
+          end
+          Warden::Proxy.new(@request.env, manager)
+        end
+      end
+
+      # sign_in a given resource by storing its keys in the session.
+      # This method bypass any warden authentication callback.
+      #
+      # * +resource+ - The resource that should be authenticated
+      # * +scope+    - An optional +Symbol+ with the scope where the resource
+      #                should be signed in with.
+      # Examples:
+      #
+      # sign_in users(:alice)
+      # sign_in users(:alice), scope: :admin
+      def sign_in(resource, deprecated = nil, scope: nil)
+        if deprecated.present?
+          scope = resource
+          resource = deprecated
+
+          ActiveSupport::Deprecation.warn <<-DEPRECATION.strip_heredoc
+            [Devise] sign_in(:#{scope}, resource) on controller tests is deprecated and will be removed from Devise.
+            Please use sign_in(resource, scope: :#{scope}) instead.
+          DEPRECATION
+        end
+
+        scope ||= Devise::Mapping.find_scope!(resource)
+
+        warden.instance_variable_get(:@users).delete(scope)
+        warden.session_serializer.store(resource, scope)
+      end
+
+      # Sign out a given resource or scope by calling logout on Warden.
+      # This method bypass any warden logout callback.
+      #
+      # Examples:
+      #
+      #   sign_out :user     # sign_out(scope)
+      #   sign_out @user     # sign_out(resource)
+      #
+      def sign_out(resource_or_scope)
+        scope = Devise::Mapping.find_scope!(resource_or_scope)
+        @controller.instance_variable_set(:"@current_#{scope}", nil)
+        user = warden.instance_variable_get(:@users).delete(scope)
+        warden.session_serializer.delete(scope, user)
+      end
+
+      protected
+
+      # Catch warden continuations and handle like the middleware would.
+      # Returns nil when interrupted, otherwise the normal result of the block.
+      def _catch_warden(&block)
+        result = catch(:warden, &block)
+
+        env = @controller.request.env
+
+        result ||= {}
+
+        # Set the response. In production, the rack result is returned
+        # from Warden::Manager#call, which the following is modelled on.
+        case result
+        when Array
+          if result.first == 401 && intercept_401?(env) # does this happen during testing?
+            _process_unauthenticated(env)
+          else
+            result
+          end
+        when Hash
+          _process_unauthenticated(env, result)
+        else
+          result
+        end
+      end
+
+      def _process_unauthenticated(env, options = {})
+        options[:action] ||= :unauthenticated
+        proxy = request.env['warden']
+        result = options[:result] || proxy.result
+
+        ret = case result
+        when :redirect
+          body = proxy.message || "You are being redirected to #{proxy.headers['Location']}"
+          [proxy.status, proxy.headers, [body]]
+        when :custom
+          proxy.custom_response
+        else
+          request.env["PATH_INFO"] = "/#{options[:action]}"
+          request.env["warden.options"] = options
+          Warden::Manager._run_callbacks(:before_failure, env, options)
+
+          status, headers, response = Devise.warden_config[:failure_app].call(env).to_a
+          @controller.response.headers.merge!(headers)
+          @controller.status = status
+          @controller.response.body = response.body
+          nil # causes process return @response
+        end
+
+        # ensure that the controller response is set up. In production, this is
+        # not necessary since warden returns the results to rack. However, at
+        # testing time, we want the response to be available to the testing
+        # framework to verify what would be returned to rack.
+        if ret.is_a?(Array)
+          status, headers, body = *ret
+          # ensure the controller response is set to our response.
+          @controller.response ||= @response
+          @response.status = status
+          @response.headers.merge!(headers)
+          @response.body = body
+        end
+
+        ret
+      end
+    end
+  end
+end

lib/devise/test/integration_helpers.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+module Devise
+  # Devise::Test::IntegrationHelpers is a helper module for facilitating
+  # authentication on Rails integration tests to bypass the required steps for
+  # signin in or signin out a record.
+  #
+  # Examples
+  #
+  #  class PostsTest < ActionDispatch::IntegrationTest
+  #    include Devise::Test::IntegrationHelpers
+  #
+  #    test 'authenticated users can see posts' do
+  #      sign_in users(:bob)
+  #
+  #      get '/posts'
+  #      assert_response :success
+  #    end
+  #  end
+  module Test
+    module IntegrationHelpers
+      def self.included(base)
+        base.class_eval do
+          include Warden::Test::Helpers
+
+          setup :setup_integration_for_devise
+          teardown :teardown_integration_for_devise
+        end
+      end
+
+      # Signs in a specific resource, mimicking a successfull sign in
+      # operation through +Devise::SessionsController#create+.
+      #
+      # * +resource+ - The resource that should be authenticated
+      # * +scope+    - An optional +Symbol+ with the scope where the resource
+      #                should be signed in with.
+      def sign_in(resource, scope: nil)
+        scope ||= Devise::Mapping.find_scope!(resource)
+
+        login_as(resource, scope: scope)
+      end
+
+      # Signs out a specific scope from the session.
+      #
+      # * +resource_or_scope+ - The resource or scope that should be signed out.
+      def sign_out(resource_or_scope)
+        scope = Devise::Mapping.find_scope!(resource_or_scope)
+
+        logout scope
+      end
+
+      protected
+
+      def setup_integration_for_devise
+        Warden.test_mode!
+      end
+
+      def teardown_integration_for_devise
+        Warden.test_reset!
+      end
+    end
+  end
+end

lib/devise/test_helpers.rb

@@ -1,132 +1,15 @@
+# frozen_string_literal: true
+
 module Devise
-  # Devise::TestHelpers provides a facility to test controllers in isolation
-  # when using ActionController::TestCase allowing you to quickly sign_in or
-  # sign_out a user. Do not use Devise::TestHelpers in integration tests.
-  #
-  # Notice you should not test Warden specific behavior (like Warden callbacks)
-  # using Devise::TestHelpers since it is a stub of the actual behavior. Such
-  # callbacks should be tested in your integration suite instead.
   module TestHelpers
     def self.included(base)
       base.class_eval do
-        setup :setup_controller_for_warden, :warden if respond_to?(:setup)
+        ActiveSupport::Deprecation.warn <<-DEPRECATION.strip_heredoc
+          [Devise] including `Devise::TestHelpers` is deprecated and will be removed from Devise.
+          For controller tests, please include `Devise::Test::ControllerHelpers` instead.
+        DEPRECATION
+        include Devise::Test::ControllerHelpers
       end
     end
-
-    # Override process to consider warden.
-    def process(*)
-      # Make sure we always return @response, a la ActionController::TestCase::Behaviour#process, even if warden interrupts
-      _catch_warden { super } || @response
-    end
-
-    # We need to setup the environment variables and the response in the controller.
-    def setup_controller_for_warden #:nodoc:
-      @request.env['action_controller.instance'] = @controller
-    end
-
-    # Quick access to Warden::Proxy.
-    def warden #:nodoc:
-      @request.env['warden'] ||= begin
-        manager = Warden::Manager.new(nil) do |config|
-          config.merge! Devise.warden_config
-        end
-        Warden::Proxy.new(@request.env, manager)
-      end
-    end
-
-    # sign_in a given resource by storing its keys in the session.
-    # This method bypass any warden authentication callback.
-    #
-    # Examples:
-    #
-    #   sign_in :user, @user   # sign_in(scope, resource)
-    #   sign_in @user          # sign_in(resource)
-    #
-    def sign_in(resource_or_scope, resource=nil)
-      scope    ||= Devise::Mapping.find_scope!(resource_or_scope)
-      resource ||= resource_or_scope
-      warden.instance_variable_get(:@users).delete(scope)
-      warden.session_serializer.store(resource, scope)
-    end
-
-    # Sign out a given resource or scope by calling logout on Warden.
-    # This method bypass any warden logout callback.
-    #
-    # Examples:
-    #
-    #   sign_out :user     # sign_out(scope)
-    #   sign_out @user     # sign_out(resource)
-    #
-    def sign_out(resource_or_scope)
-      scope = Devise::Mapping.find_scope!(resource_or_scope)
-      @controller.instance_variable_set(:"@current_#{scope}", nil)
-      user = warden.instance_variable_get(:@users).delete(scope)
-      warden.session_serializer.delete(scope, user)
-    end
-
-    protected
-
-    # Catch warden continuations and handle like the middleware would.
-    # Returns nil when interrupted, otherwise the normal result of the block.
-    def _catch_warden(&block)
-      result = catch(:warden, &block)
-
-      env = @controller.request.env
-
-      result ||= {}
-
-      # Set the response. In production, the rack result is returned
-      # from Warden::Manager#call, which the following is modelled on.
-      case result
-      when Array
-        if result.first == 401 && intercept_401?(env) # does this happen during testing?
-          _process_unauthenticated(env)
-        else
-          result
-        end
-      when Hash
-        _process_unauthenticated(env, result)
-      else
-        result
-      end
-    end
-
-    def _process_unauthenticated(env, options = {})
-      options[:action] ||= :unauthenticated
-      proxy = env['warden']
-      result = options[:result] || proxy.result
-
-      ret = case result
-      when :redirect
-        body = proxy.message || "You are being redirected to #{proxy.headers['Location']}"
-        [proxy.status, proxy.headers, [body]]
-      when :custom
-        proxy.custom_response
-      else
-        env["PATH_INFO"] = "/#{options[:action]}"
-        env["warden.options"] = options
-        Warden::Manager._run_callbacks(:before_failure, env, options)
-
-        status, headers, response = Devise.warden_config[:failure_app].call(env).to_a
-        @controller.response.headers.merge!(headers)
-        @controller.send :render, status: status, text: response.body,
-          content_type: headers["Content-Type"], location: headers["Location"]
-        nil # causes process return @response
-      end
-
-      # ensure that the controller response is set up. In production, this is
-      # not necessary since warden returns the results to rack. However, at
-      # testing time, we want the response to be available to the testing
-      # framework to verify what would be returned to rack.
-      if ret.is_a?(Array)
-        # ensure the controller response is set to our response.
-        @controller.response ||= @response
-        @response.status = ret.first
-        @response.headers = ret.second
-        @response.body = ret.third
-      end
-
-      ret
-    end
   end
 end

lib/devise/time_inflector.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/module/delegation"
 
 module Devise

lib/devise/token_generator.rb

@@ -1,11 +1,10 @@
-# Deprecate: Copied verbatim from Rails source, remove once we move to Rails 4 only.
-require 'thread_safe'
+# frozen_string_literal: true
+
 require 'openssl'
-require 'securerandom'
 
 module Devise
   class TokenGenerator
-    def initialize(key_generator, digest="SHA256")
+    def initialize(key_generator, digest = "SHA256")
       @key_generator = key_generator
       @digest = digest
     end
@@ -30,41 +29,4 @@ module Devise
       @key_generator.generate_key("Devise #{column}")
     end
   end
-
-  # KeyGenerator is a simple wrapper around OpenSSL's implementation of PBKDF2
-  # It can be used to derive a number of keys for various purposes from a given secret.
-  # This lets Rails applications have a single secure secret, but avoid reusing that
-  # key in multiple incompatible contexts.
-  class KeyGenerator
-    def initialize(secret, options = {})
-      @secret = secret
-      # The default iterations are higher than required for our key derivation uses
-      # on the off chance someone uses this for password storage
-      @iterations = options[:iterations] || 2**16
-    end
-
-    # Returns a derived key suitable for use.  The default key_size is chosen
-    # to be compatible with the default settings of ActiveSupport::MessageVerifier.
-    # i.e. OpenSSL::Digest::SHA1#block_length
-    def generate_key(salt, key_size=64)
-      OpenSSL::PKCS5.pbkdf2_hmac_sha1(@secret, salt, @iterations, key_size)
-    end
-  end
-
-  # CachingKeyGenerator is a wrapper around KeyGenerator which allows users to avoid
-  # re-executing the key generation process when it's called using the same salt and
-  # key_size
-  class CachingKeyGenerator
-    def initialize(key_generator)
-      @key_generator = key_generator
-      @cache_keys = ThreadSafe::Cache.new
-    end
-
-    # Returns a derived key suitable for use.  The default key_size is chosen
-    # to be compatible with the default settings of ActiveSupport::MessageVerifier.
-    # i.e. OpenSSL::Digest::SHA1#block_length
-    def generate_key(salt, key_size=64)
-      @cache_keys["#{salt}#{key_size}"] ||= @key_generator.generate_key(salt, key_size)
-    end
-  end
 end

lib/devise/version.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
-  VERSION = "3.5.3".freeze
+  VERSION = "4.4.0".freeze
 end

lib/generators/active_record/devise_generator.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails/generators/active_record'
 require 'generators/devise/orm_helpers'
 
@@ -6,14 +8,16 @@ module ActiveRecord
     class DeviseGenerator < ActiveRecord::Generators::Base
       argument :attributes, type: :array, default: [], banner: "field:type field:type"
 
+      class_option :primary_key_type, type: :string, desc: "The type for primary key"
+
       include Devise::Generators::OrmHelpers
       source_root File.expand_path("../templates", __FILE__)
 
       def copy_devise_migration
         if (behavior == :invoke && model_exists?) || (behavior == :revoke && migration_exists?(table_name))
-          migration_template "migration_existing.rb", "db/migrate/add_devise_to_#{table_name}.rb"
+          migration_template "migration_existing.rb", "#{migration_path}/add_devise_to_#{table_name}.rb", migration_version: migration_version
         else
-          migration_template "migration.rb", "db/migrate/devise_create_#{table_name}.rb"
+          migration_template "migration.rb", "#{migration_path}/devise_create_#{table_name}.rb", migration_version: migration_version
         end
       end
 
@@ -75,17 +79,32 @@ RUBY
       end
 
       def inet?
-        rails4? && postgresql?
+        postgresql?
       end
 
-      def rails4?
-        Rails.version.start_with? '4'
+      def rails5?
+        Rails.version.start_with? '5'
       end
 
       def postgresql?
         config = ActiveRecord::Base.configurations[Rails.env]
         config && config['adapter'] == 'postgresql'
       end
+
+     def migration_version
+       if rails5?
+         "[#{Rails::VERSION::MAJOR}.#{Rails::VERSION::MINOR}]"
+       end
+     end
+
+     def primary_key_type
+       primary_key_string if rails5?
+     end
+
+     def primary_key_string
+       key_string = options[:primary_key_type]
+       ", id: :#{key_string}" if key_string
+     end
     end
   end
 end

lib/generators/active_record/templates/migration.rb

@@ -1,6 +1,8 @@
-class DeviseCreate<%= table_name.camelize %> < ActiveRecord::Migration
+# frozen_string_literal: true
+
+class DeviseCreate<%= table_name.camelize %> < ActiveRecord::Migration<%= migration_version %>
   def change
-    create_table(:<%= table_name %>) do |t|
+    create_table :<%= table_name %><%= primary_key_type %> do |t|
 <%= migration_data -%>
 
 <% attributes.each do |attribute| -%>

lib/generators/active_record/templates/migration_existing.rb

@@ -1,6 +1,8 @@
-class AddDeviseTo<%= table_name.camelize %> < ActiveRecord::Migration
+# frozen_string_literal: true
+
+class AddDeviseTo<%= table_name.camelize %> < ActiveRecord::Migration<%= migration_version %>
   def self.up
-    change_table(:<%= table_name %>) do |t|
+    change_table :<%= table_name %> do |t|
 <%= migration_data -%>
 
 <% attributes.each do |attribute| -%>

lib/generators/devise/controllers_generator.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails/generators/base'
 
 module Devise

lib/generators/devise/devise_generator.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails/generators/named_base'
 
 module Devise
@@ -8,7 +10,7 @@ module Devise
       namespace "devise"
       source_root File.expand_path("../templates", __FILE__)
 
-      desc "Generates a model with the given NAME (if one does not exist) with devise " <<
+      desc "Generates a model with the given NAME (if one does not exist) with devise " \
            "configuration plus a migration file and devise routes."
 
       hook_for :orm
@@ -16,7 +18,7 @@ module Devise
       class_option :routes, desc: "Generate routes", type: :boolean, default: true
 
       def add_devise_routes
-        devise_route  = "devise_for :#{plural_name}"
+        devise_route  = "devise_for :#{plural_name}".dup
         devise_route << %Q(, class_name: "#{class_name}") if class_name.include?("::")
         devise_route << %Q(, skip: :all) unless options.routes?
         route devise_route

lib/generators/devise/install_generator.rb

@@ -1,8 +1,12 @@
+# frozen_string_literal: true
+
 require 'rails/generators/base'
 require 'securerandom'
 
 module Devise
   module Generators
+    MissingORMError = Class.new(Thor::Error)
+
     class InstallGenerator < Rails::Generators::Base
       source_root File.expand_path("../../templates", __FILE__)
 
@@ -10,6 +14,19 @@ module Devise
       class_option :orm
 
       def copy_initializer
+        unless options[:orm]
+          raise MissingORMError, <<-ERROR.strip_heredoc
+          An ORM must be set to install Devise in your application.
+
+          Be sure to have an ORM like Active Record or Mongoid loaded in your
+          app or configure your own at `config/application.rb`.
+
+            config.generators do |g|
+              g.orm :your_orm_gem
+            end
+          ERROR
+        end
+
         template "devise.rb", "config/initializers/devise.rb"
       end
 

lib/generators/devise/orm_helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Devise
   module Generators
     module OrmHelpers
@@ -8,31 +10,14 @@ module Devise
   devise :database_authenticatable, :registerable,
          :recoverable, :rememberable, :trackable, :validatable
 
-CONTENT
-        buffer += <<-CONTENT if needs_attr_accessible?
-  # Setup accessible (or protected) attributes for your model
-  attr_accessible :email, :password, :password_confirmation, :remember_me
-
 CONTENT
         buffer
       end
 
-      def needs_attr_accessible?
-        rails_3? && !strong_parameters_enabled?
-      end
-
-      def rails_3?
-        Rails::VERSION::MAJOR == 3
-      end
-
-      def strong_parameters_enabled?
-        defined?(ActionController::StrongParameters)
-      end
-
       private
 
       def model_exists?
-        File.exists?(File.join(destination_root, model_path))
+        File.exist?(File.join(destination_root, model_path))
       end
 
       def migration_exists?(table_name)
@@ -40,7 +25,11 @@ CONTENT
       end
 
       def migration_path
-        @migration_path ||= File.join("db", "migrate")
+        if Rails.version >= '5.0.3'
+          db_migrate_path
+        else
+          @migration_path ||= File.join("db", "migrate")
+        end
       end
 
       def model_path

lib/generators/devise/views_generator.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails/generators/base'
 
 module Devise
@@ -21,13 +23,6 @@ module Devise
         public_task :copy_views
       end
 
-      # TODO: Add this to Rails itself
-      module ClassMethods
-        def hide!
-          Rails::Generators.hide_namespace self.namespace
-        end
-      end
-
       def copy_views
         if options[:views]
           options[:views].each do |directory|
@@ -139,7 +134,11 @@ module Devise
                               default: defined?(SimpleForm) ? "simple_form_for" : "form_for"
 
       hook_for :markerb,  desc: "Generate markerb instead of erb mail views",
-                          default: defined?(Markerb) ? :markerb : :erb,
+                          default: defined?(Markerb),
+                          type: :boolean
+
+      hook_for :erb,      desc: "Generate erb mail views",
+                          default: !defined?(Markerb),
                           type: :boolean
     end
   end