devise_for now accepts a block. All routes inside the block uses the scope defined by devise_for.

You are now allowed to do:

  devise_for :users do
    # Non conventional sign_in route
    get "/sign_in" => "devise/sessions#new"
  end

And it should work as expected.

lib/devise/rails/routes.rb

@@ -151,8 +151,9 @@ module ActionDispatch::Routing
         routes  = mapping.routes
         routes -= Array(options.delete(:skip)).map { |s| s.to_s.singularize.to_sym }
 
-        with_devise_exclusive_scope mapping.fullpath, mapping.name do
-          devise_scope mapping.name do
+        devise_scope mapping.name do
+          yield if block_given?
+          with_devise_exclusive_scope mapping.fullpath, mapping.name do
             routes.each { |mod| send(:"devise_#{mod}", mapping, mapping.controllers) }
           end
         end

test/integration/authenticatable_test.rb

@@ -189,7 +189,7 @@ class AuthenticationRedirectTest < ActionController::IntegrationTest
     follow_redirect!
     sign_in_as_user :visit => false
 
-    assert_template 'users/index'
+    assert_current_url '/users'
     assert_nil session[:"user_return_to"]
   end
 
@@ -205,7 +205,7 @@ class AuthenticationRedirectTest < ActionController::IntegrationTest
     follow_redirect!
     sign_in_as_user :visit => false
 
-    assert_template 'users/index'
+    assert_current_url '/users'
     assert_nil session[:"user_return_to"]
   end
 
@@ -231,7 +231,7 @@ class AuthenticationSessionTest < ActionController::IntegrationTest
     assert_redirected_to new_user_session_path
   end
 
-  test 'allows session to be set by a given scope' do
+  test 'allows session to be set for a given scope' do
     sign_in_as_user
     get '/users'
     assert_equal "Cart", @controller.user_session[:cart]
@@ -277,6 +277,18 @@ class AuthenticationWithScopesTest < ActionController::IntegrationTest
       end
     end
   end
+
+  test 'uses the mapping from router' do
+    sign_in_as_user :visit => "/as/sign_in"
+    assert warden.authenticated?(:user)
+    assert_not warden.authenticated?(:admin)
+  end
+
+  test 'uses the mapping from nested devise_for call' do
+    sign_in_as_user :visit => "/devise_for/sign_in"
+    assert warden.authenticated?(:user)
+    assert_not warden.authenticated?(:admin)
+  end
 end
 
 class AuthenticationOthersTest < ActionController::IntegrationTest

test/rails_app/config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  # Resources for testing
   resources :users, :only => [:index] do
     get :expire, :on => :member
     get :accept, :on => :member
@@ -6,9 +7,28 @@ Rails.application.routes.draw do
 
   resources :admins, :only => [:index]
 
-  devise_for :users
+  # Users scope
+  devise_for :users do
+    match "/devise_for/sign_in", :to => "devise/sessions#new"
+  end
+
+  as :user do
+    match "/as/sign_in", :to => "devise/sessions#new"
+  end
+
+  match "/sign_in", :to => "devise/sessions#new"
+
+  # Admin scope
   devise_for :admin, :path => "admin_area", :controllers => { :sessions => "sessions" }, :skip => :passwords
 
+  match "/admin_area/home", :to => "admins#index", :as => :admin_root
+  match "/anywhere", :to => "foo#bar", :as => :new_admin_password
+
+  authenticate(:admin) do
+    match "/private", :to => "home#private", :as => :private
+  end
+
+  # Other routes for routing_test.rb
   namespace :publisher, :path_names => { :sign_in => "i_don_care", :sign_out => "get_out" } do
     devise_for :accounts, :class_name => "User", :path_names => { :sign_in => "get_in" }
   end
@@ -23,15 +43,5 @@ Rails.application.routes.draw do
       }
   end
 
-  match "/admin_area/home", :to => "admins#index", :as => :admin_root
-  match "/sign_in", :to => "devise/sessions#new"
-
-  # Dummy route for new admin pasword
-  match "/anywhere", :to => "foo#bar", :as => :new_admin_password
-
   root :to => "home#index"
-
-  authenticate(:admin) do
-    match "/private", :to => "home#private", :as => :private
-  end
 end

test/support/integration.rb

@@ -31,7 +31,7 @@ class ActionDispatch::IntegrationTest
 
   def sign_in_as_user(options={}, &block)
     user = create_user(options)
-    get new_user_session_path unless options[:visit] == false
+    visit_with_option options[:visit], new_user_session_path
     fill_in 'email', :with => 'user@test.com'
     fill_in 'password', :with => options[:password] || '123456'
     check 'remember me' if options[:remember_me] == true
@@ -42,7 +42,7 @@ class ActionDispatch::IntegrationTest
 
   def sign_in_as_admin(options={}, &block)
     admin = create_admin(options)
-    get new_admin_session_path unless options[:visit] == false
+    visit_with_option options[:visit], new_admin_session_path
     fill_in 'email', :with => 'admin@test.com'
     fill_in 'password', :with => '123456'
     yield if block_given?
@@ -70,9 +70,19 @@ class ActionDispatch::IntegrationTest
 
   protected
 
+    def visit_with_option(given, default)
+      case given
+      when String
+        visit given
+      when FalseClass
+        # Do nothing
+      else
+        visit default
+      end
+    end
+
     def prepend_host(url)
       url = "http://#{request.host}#{url}" if url[0] == ?/
       url
     end
-
 end