Sign out by default will destroy the existing session.

app/controllers/devise/registrations_controller.rb

@@ -47,8 +47,8 @@ class Devise::RegistrationsController < ApplicationController
   # DELETE /resource
   def destroy
     resource.destroy
-    set_flash_message :notice, :destroyed
     sign_out_and_redirect(self.resource)
+    set_flash_message :notice, :destroyed
   end
 
   # GET /resource/cancel

app/controllers/devise/sessions_controller.rb

@@ -17,7 +17,8 @@ class Devise::SessionsController < ApplicationController
 
   # GET /resource/sign_out
   def destroy
-    set_flash_message :notice, :signed_out if signed_in?(resource_name)
+    signed_in = signed_in?(resource_name)
     sign_out_and_redirect(resource_name)
+    set_flash_message :notice, :signed_out if signed_in
   end
 end

lib/devise/controllers/helpers.rb

@@ -128,13 +128,10 @@ module Devise
       end
 
       # Sign out all active users or scopes. This helper is useful for signing out all roles
-      # in one click.
+      # in one click. This signs out ALL scopes in warden.
       def sign_out_all_scopes
-        # Not "warden.logout" since we need to sign_out only devise-defined scopes.
-        scopes = Devise.mappings.keys
-        scopes.each { |scope| warden.user(scope) }
         warden.raw_session.inspect
-        warden.logout(*scopes)
+        warden.logout
       end
 
       # Returns and delete the url stored in the session for the given scope. Useful

lib/devise/rails.rb

@@ -47,7 +47,7 @@ module Devise
       else
         puts "[DEVISE] You are using #{Devise.encryptor} as encryptor. From version 1.2, " <<
           "you need to explicitly add `devise :encryptable, :encryptor => #{Devise.encryptor.to_sym}` " <<
-          "to your models and comment the value in the config/initializers/devise.rb."
+          "to your models and comment the current value in the config/initializers/devise.rb"
       end
     end
 

lib/devise/rails/warden_compat.rb

@@ -4,8 +4,7 @@ module Warden::Mixins::Common
   end
 
   def reset_session!
-    raw_session.inspect # why do I have to inspect it to get it to clear?
-    raw_session.clear
+    request.reset_session
   end
 
   def cookies

test/controllers/helpers_test.rb

@@ -120,11 +120,7 @@ class ControllerAuthenticableTest < ActionController::TestCase
   end
 
   test 'sign out everybody proxy to logout on warden' do
-    Devise.mappings.keys.each { |scope|
-      @mock_warden.expects(:user).with(scope).returns(true)
-    }
-
-    @mock_warden.expects(:logout).with(*Devise.mappings.keys).returns(true)
+    @mock_warden.expects(:logout).with().returns(true)
     @controller.sign_out_all_scopes
   end
 
@@ -196,10 +192,7 @@ class ControllerAuthenticableTest < ActionController::TestCase
 
   test 'sign out and redirect uses the configured after sign out path when signing out all scopes' do
     swap Devise, :sign_out_all_scopes => true do
-      Devise.mappings.keys.each do |scope| # :user, :admin, :manager
-        @mock_warden.expects(:user).with(scope)
-      end
-      @mock_warden.expects(:logout).returns(true)
+      @mock_warden.expects(:logout).with().returns(true)
       @controller.expects(:redirect_to).with(admin_root_path)
       @controller.instance_eval "def after_sign_out_path_for(resource); admin_root_path; end"
       @controller.sign_out_and_redirect(:admin)