Solve bad login issue

Author: lmrodriguezr

config/application.rb

@@ -24,5 +24,8 @@ class Application < Rails::Application
 
     # Make sure Flash is always present even if api_only=true
     config.middleware.use ActionDispatch::Flash
+
+    config.autoload_paths << Rails.root.join('lib')
+    config.eager_load_paths << Rails.root.join('lib')
   end
 end

config/initializers/devise.rb

@@ -265,10 +265,11 @@
   # If you want to use other strategies, that are not supported by Devise, or
   # change the failure app, you can configure them inside the config.warden block.
   #
-  # config.warden do |manager|
+  config.warden do |manager|
   #   manager.intercept_401 = false
   #   manager.default_strategies(scope: :user).unshift :some_external_strategy
-  # end
+    manager.failure_app = CustomFailureApp
+  end
 
   # ==> Mountable engine configurations
   # When using Devise inside an engine, let's call it `MyEngine`, and this engine

lib/custom_failure_app.rb

@@ -0,0 +1,11 @@
+class CustomFailureApp < Devise::FailureApp
+  def respond
+    redirect
+  end
+
+  def redirect_url
+    # Redirect back to the login page with a flash message
+    new_user_session_path
+  end
+end
+