導軌路由錯誤？

Question

我想以這樣的URL來訪問我的檢查站＃指數法： http://localhost:3000/lessons/introductions/checkpoints/

但我得到這個錯誤：因爲在我的「耙路線」

No route matches {:action=>"show", :controller=>"checkpoints", :lesson_id=>#<Checkpoint id: 1, checkpoint: "Definition of Monetary Policy", url: "http://www.youtube.com/watch?v=HX3wOWN9-sM", objective: "Define monetary policy", description: "Welcome to this series of lectures on monetary poli...", question: "What is the definition of monetary policy?", hint: "It is the deliberate manipulation of something OR s...", answer: "-", lesson_id: 8, created_at: "2012-06-29 07:21:47", updated_at: "2012-06-30 08:24:15", slug: "definition-of-monetary-policy">}

這不應該是這樣的：

 lesson_checkpoints GET /lessons/:lesson_id/checkpoints(.:format)   checkpoints#index 
         POST /lessons/:lesson_id/checkpoints(.:format)   checkpoints#create 
    new_lesson_checkpoint GET /lessons/:lesson_id/checkpoints/new(.:format)  checkpoints#new 
    edit_lesson_checkpoint GET /lessons/:lesson_id/checkpoints/:id/edit(.:format) checkpoints#edit 
     lesson_checkpoint GET /lessons/:lesson_id/checkpoints/:id(.:format)  checkpoints#show 
         PUT /lessons/:lesson_id/checkpoints/:id(.:format)  checkpoints#update 
         DELETE /lessons/:lesson_id/checkpoints/:id(.:format)  checkpoints#destroy` 

不是加載#index操作而不是#show操作？有誰知道這個錯誤的可能原因？

這是我的routes.rb看起來像：

resources :lessons do 
    resources :checkpoints 
end 

resources :lessons 

resources :topics do 
    resources :lessons 
end 

#Devise Routes 
devise_for :users 


resources :subjects do 
    resources :topics 
end 

Answer 1

我發現了問題：我的friendly_id是正確的。錯誤在我看來。我已經定義了兩次資源，所以我可以訪問localhost/lessons/blahblah的url。這對我有用。我的視圖文件需要編輯（從默認的未嵌套的文件），一旦它被糾正，一切都再次順利進行。

Answer 2

我想你沒有爲「介紹」中提到的路線。

resources :lessons do 
    resources :introductions 
end 

resources :introductions do 
    resources :checkpoints 
end 

Answer 3

我看到兩個問題：

1. 我認爲有一些問題與建立friendly_id您的經驗模型。 您的friendly_id設置將檢查點的對象作爲您課程的友好標識，而不是課程的標題，這是您希望從給定的URL獲得的標題。

2. 您的路線聲明不正確。你宣佈資源「課程」兩次。

resources :lessons do 
    resources :checkpoints 
end 
resources :lessons 

您可以檢查您friendly_id的正確性控制檯：

lesson = Lesson.create(name: 'introduction') 
lesson.friendly_id #=> should output 'introduction'