From dd36324756b6b3027444db545bc1875f5d2d4b4c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@gmail.com>
Date: Thu, 8 Sep 2011 08:20:37 +0200
Subject: [PATCH] No need to finalize Devise helpers all the time, closes #1317

---
 lib/devise/rails/routes.rb | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/devise/rails/routes.rb b/lib/devise/rails/routes.rb
index 17199ee7..8b84258a 100644
--- a/lib/devise/rails/routes.rb
+++ b/lib/devise/rails/routes.rb
@@ -4,8 +4,12 @@ module ActionDispatch::Routing
     # need devise_for mappings already declared to create filters and helpers.
     def finalize_with_devise!
       finalize_without_devise!
-      Devise.configure_warden!
-      Devise.regenerate_helpers!
+
+      @devise_finalized ||= begin
+        Devise.configure_warden!
+        Devise.regenerate_helpers!
+        true
+      end
     end
     alias_method_chain :finalize!, :devise
   end
@@ -169,6 +173,7 @@ module ActionDispatch::Routing
     #     end
     #
     def devise_for(*resources)
+      @devise_finalized = false
       options = resources.extract_options!
 
       options[:as]          ||= @scope[:as]     if @scope[:as].present?