Use prepend_before_filter in require_no_authentication.

We need to be sure require_no_authentication runs before other user filters that may call some Devise helper (ie current_xxx).

test/rails_app/app/controllers/application_controller.rb

@@ -7,4 +7,6 @@ class ApplicationController < ActionController::Base
 
   # Scrub sensitive parameters from your log
   filter_parameter_logging :password
+
+  before_filter :current_user
 end