diff --git a/config/routes.rb b/config/routes.rb
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -54,6 +54,7 @@
       post 'add_problem', to: 'groups#add_problem', as: 'add_problem'
       delete 'remove_problem/:problem_id', to: 'groups#remove_problem', as: 'remove_problem'
       delete 'remove_all_problem', to: 'groups#remove_all_problem', as: 'remove_all_problem'
+      get 'toggle'
     end
     collection do
 
@@ -92,7 +93,6 @@
       get 'download'
       get 'compiler_msg'
       get 'rejudge'
-      get 'source'
     end
     collection do
       get 'prob/:problem_id', to: 'submissions#index', as: 'problem'
@@ -177,7 +177,7 @@
 
   #
   get 'tasks/view/:file.:ext' => 'tasks#view'
-  get 'tasks/download/:id/:file.:ext' => 'tasks#download'
+  get 'tasks/download/:id/:file.:ext' => 'tasks#download', as: 'download_task'
   get 'heartbeat/:id/edit' => 'heartbeat#edit'
 
   #grader