Do not always skip helpers, instead provide :skip_helpers as option to trigger it manually

CHANGELOG.rdoc

@@ -1,3 +1,6 @@
+* bug fix
+  * Do not always skip helpers, instead provide :skip_helpers as option to trigger it manually
+
 == 1.4.3
 
 * enhancements

lib/devise/controllers/url_helpers.rb

@@ -25,7 +25,7 @@ module Devise
       end
 
       def self.generate_helpers!
-        mappings = Devise.mappings.values.map(&:used_routes).flatten.uniq
+        mappings = Devise.mappings.values.map(&:used_helpers).flatten.uniq
         routes = Devise::URL_HELPERS.slice(*mappings)
 
         routes.each do |module_name, actions|

lib/devise/mapping.rb

@@ -23,7 +23,7 @@ module Devise
   #
   class Mapping #:nodoc:
     attr_reader :singular, :scoped_path, :path, :controllers, :path_names,
-                :class_name, :sign_out_via, :format, :used_routes
+                :class_name, :sign_out_via, :format, :used_routes, :used_helpers
     alias :name :singular
 
     # Receives an object and find a scope for it. If a scope cannot be found,
@@ -74,11 +74,21 @@ module Devise
       @sign_out_via = options[:sign_out_via] || Devise.sign_out_via
       @format = options[:format]
 
-      @used_routes = self.routes
+      singularizer = lambda { |s| s.to_s.singularize.to_sym }
+
       if options.has_key?(:only)
-        @used_routes = Array(options.delete(:only)).map { |s| s.to_s.singularize.to_sym } & @used_routes
+        @used_routes = self.routes & Array(options[:only]).map(&singularizer)
+      else
+        @used_routes = self.routes - Array(options[:skip]).map(&singularizer)
+      end
+
+      if options[:skip_helpers] == true
+        @used_helpers = @used_routes
+      elsif skip = options[:skip_helpers]
+        @used_helpers = self.routes - Array(skip).map(&singularizer)
+      else
+        @used_helpers = self.routes
       end
-      @used_routes -= Array(options.delete(:skip)).map { |s| s.to_s.singularize.to_sym }
     end
 
     # Return modules for the mapping.

lib/devise/rails/routes.rb

@@ -104,6 +104,14 @@ module ActionDispatch::Routing
     #
     #      devise_for :users, :only => :sessions
     #
+    #  * :skip_helpers => skip generating Devise url helpers like new_session_path(@user).
+    #    This is useful to avoid conflicts with previous routes and is false by default.
+    #    It accepts true as option, meaning it will skip all the helpers for the controllers
+    #    given in :skip but it also accepts specific helpers to be skipped:
+    #
+    #      devise_for :users, :skip => [:registrations, :confirmations], :skip_helpers => true
+    #      devise_for :users, :skip_helpers => [:registrations, :confirmations]
+    #
     #  * :format => include "(.:format)" in the generated routes? true by default, set to false to disable:
     #
     #      devise_for :users, :format => false

test/rails_app/config/routes.rb

@@ -52,8 +52,8 @@ Rails.application.routes.draw do
   end
   
   # Routes for format=false testing
-  devise_for :htmlonly_admin, :class_name => "Admin", :skip => [:confirmations, :unlocks], :path => "htmlonly_admin", :format => false
-  devise_for :htmlonly_users, :class_name => "User", :only => [:confirmations, :unlocks], :path => "htmlonly_users", :format => false
+  devise_for :htmlonly_admin, :class_name => "Admin", :skip => [:confirmations, :unlocks], :path => "htmlonly_admin", :format => false, :skip_helpers => [:confirmations, :unlocks]
+  devise_for :htmlonly_users, :class_name => "User", :only => [:confirmations, :unlocks], :path => "htmlonly_users", :format => false, :skip_helpers => true
   
   # Other routes for routing_test.rb
   devise_for :reader, :class_name => "User", :only => :passwords