Apply app_auth to ad_banner. From now,ad_banner can only be viewed for at least manager.

app/controllers/application_controller.rb

@@ -40,7 +40,8 @@ class ApplicationController < ActionController::Base
   end
   
   def auth_failed_in_backend
-     redirect_to admin_dashboards_url 
+     #redirect_to admin_dashboards_url 
+     redirect_to root_path
   end
   
   # Check if the current_user is admin