Add an easy way to configure an application to sign in users through "/sign_in".

First, configure your routes:

  map.devise_for :users
  map.sign_in "/sign_in", :controller => "sessions", :action => "new"

Then, in config/initializers/devise.rb:

  config.use_default_scope = true

The default scope is always the first declaration in routes.rb, but if you need
to change it, you can also do it through the initializer:

  config.default_scope = :user

CHANGELOG.rdoc

@@ -1,5 +1,6 @@
 * enhancements
   * Warden 0.8.0 compatibility
+  * Add an easy for map.connect 'sign_in', :controller => "sessions", :action => "new" to work
 
 * deprecation
   * Removed DeviseMailer.sender

generators/devise_install/templates/devise.rb

@@ -10,6 +10,9 @@ Devise.setup do |config|
   # to check the docs for a complete set.
   config.all = [:authenticatable, :confirmable, :recoverable, :rememberable, :trackable, :validatable]
 
+  # Configure the e-mail address which will be shown in DeviseMailer.
+  config.mailer_sender = "please-change-me@config-initializers-devise.com"
+
   # Invoke `rake secret` and use the printed value to setup a pepper to generate
   # the encrypted password. By default no pepper is used.
   # config.pepper = "rake secret output"
@@ -42,9 +45,6 @@ Devise.setup do |config|
   # time the user will be asked for credentials again.
   # config.timeout_in = 10.minutes
 
-  # Configure the e-mail address which will be shown in DeviseMailer.
-  config.mailer_sender = "please-change-me@config-initializers-devise.com"
-
   # Load and configure the ORM. Supports :active_record, :data_mapper and :mongo_mapper.
   # require 'devise/orm/mongo_mapper'
   # config.orm = :mongo_mapper
@@ -54,6 +54,16 @@ Devise.setup do |config|
   # are using only default views.
   # config.scoped_views = true
 
+  # By default, devise detects the role accessed based on the url. So whenever
+  # accessing "/users/sign_in", it knows you are accessing an User. This makes
+  # routes as "/sign_in" not possible, unless you tell Devise to use the default
+  # scope, setting true below.
+  # config.use_default_scope = true
+
+  # Configure the default scope used by Devise. By default it's the first devise
+  # role declared in your routes.
+  # config.default_scope = :user
+
   # If you want to use other strategies, that are not (yet) supported by Devise,
   # you can configure them inside the config.warden block. The example below
   # allows you to setup OAuth, using http://github.com/roman/warden_oauth

lib/devise.rb

@@ -103,11 +103,15 @@ module Devise
   mattr_accessor :scoped_views
   @@scoped_views = false
 
-  # The default scope which is used by warden
+  # Tell when to use the default scope, if one cannot be found from routes.
+  mattr_accessor :use_default_scope
+  @@use_default_scope
+
+  # The default scope which is used by warden.
   mattr_accessor :default_scope
   @@default_scope = nil
 
-  # Address which sends Devise e-mails
+  # Address which sends Devise e-mails.
   mattr_accessor :mailer_sender
   @@mailer_sender
 

lib/devise/controllers/helpers.rb

@@ -35,7 +35,11 @@ module Devise
 
       # Attempt to find the mapped route for devise based on request path
       def devise_mapping
-        @devise_mapping ||= Devise::Mapping.find_by_path(request.path)
+        @devise_mapping ||= begin
+          mapping   = Devise::Mapping.find_by_path(request.path)
+          mapping ||= Devise.mappings[Devise.default_scope] if Devise.use_default_scope
+          mapping
+        end
       end
 
       # Overwrites devise_controller? to return true

lib/devise/mapping.rb

@@ -29,7 +29,7 @@ module Devise
     def self.find_by_path(path)
       Devise.mappings.each_value do |mapping|
         route = path.split("/")[mapping.as_position]
-        return mapping if mapping.as == route.to_sym
+        return mapping if route && mapping.as == route.to_sym
       end
       nil
     end

test/integration/authenticatable_test.rb

@@ -154,12 +154,6 @@ class AuthenticationTest < ActionController::IntegrationTest
     assert_contain 'You need to sign in or sign up before continuing.'
   end
 
-  test 'render 404 on roles without permission' do
-    get 'admin_area/password/new'
-    assert_response :not_found
-    assert_not_contain 'Send me reset password instructions'
-  end
-
   test 'return to default url if no other was requested' do
     sign_in_as_user
 
@@ -221,4 +215,24 @@ class AuthenticationTest < ActionController::IntegrationTest
       end
     end
   end
+
+  test 'render 404 on roles without permission' do
+    get 'admin_area/password/new'
+    assert_response :not_found
+    assert_not_contain 'Send me reset password instructions'
+  end
+
+  test 'render 404 on roles without mapping' do
+    get 'sign_in'
+    assert_response :not_found
+    assert_not_contain 'Sign in'
+  end
+
+  test 'uses the mapping from the default scope if specified' do
+    swap Devise, :use_default_scope => true do
+      get 'sign_in'
+      assert_response :ok
+      assert_contain 'Sign in'
+    end
+  end
 end

test/rails_app/config/initializers/new_rails_defaults.rb

@@ -18,4 +18,7 @@ ActiveSupport.use_standard_json_time_format = true
 
 # Don't escape HTML entities in JSON, leave that for the #json_escape helper.
 # if you're including raw json in an HTML page.
-ActiveSupport.escape_html_entities_in_json = false
+ActiveSupport.escape_html_entities_in_json = false
+
+# Clean up silencers
+Rails.backtrace_cleaner.remove_silencers!

test/rails_app/config/routes.rb

@@ -12,6 +12,7 @@ ActionController::Routing::Routes.draw do |map|
   map.connect '/admin_area/password/new', :controller => "passwords", :action => "new"
   map.admin_root '/admin_area/home', :controller => "admins", :action => "index"
 
+  map.connect '/sign_in', :controller => "sessions", :action => "new"
   map.connect ':controller/:action/:id'
   map.connect ':controller/:action/:id.:format'
 end