Add missing route to mark all todos as done

config/routes.rb

@@ -333,7 +333,12 @@ Rails.application.routes.draw do
 
       resources :groups, only: [:index]
       resources :snippets, only: [:index]
-      resources :todos, only: [:index, :destroy]
+
+      resources :todos, only: [:index, :destroy] do
+        collection do
+          delete :destroy_all
+        end
+      end
 
       resources :projects, only: [:index] do
         collection do