理解「GET」在軌線路

Question

在我的路線文件我已經指定了：

resources :cards do 
end 

除了基本的CRUD路線我已經另一條路線是如下：

get '/cards/get_schema' => 'cards#get_schema' 

當我打這個終點，我實際上被帶到了cards#show。爲什麼會發生？

Answer 1

resources :cards生成的一條路由爲get '/cards/:id'。你能看到這個問題嗎？ get_schema被識別爲ID。試試這個

resources :cards do 
    get 'get_schema', on: :collection 
end 

或者只是放到了首位

get '/cards/get_schema' => 'cards#get_schema' 
resources :cards 

Answer 2

這取決於定義路由的順序上這條路線。

訂單1

Rails.application.routes.draw do 
    # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html 
    resources :cards do 
    end 

    get '/cards/get_schema' => 'cards#get_schema' 
end 

運行路線

rake routes 

輸出

~/D/p/p/s/console_test> rake routes 
      Prefix Verb URI Pattern     Controller#Action 
      cards GET /cards(.:format)   cards#index 
       POST /cards(.:format)   cards#create 
     new_card GET /cards/new(.:format)  cards#new 
     edit_card GET /cards/:id/edit(.:format) cards#edit 
      card GET /cards/:id(.:format)  cards#show #<======== 
       PATCH /cards/:id(.:format)  cards#update 
       PUT /cards/:id(.:format)  cards#update 
       DELETE /cards/:id(.:format)  cards#destroy 
cards_get_schema GET /cards/get_schema(.:format) cards#get_schema #<======== 

由於節目預計cards/:id而且上面/cards/get_schema它被路由到cards#show

訂購2

Rails.application.routes.draw do 
    # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html 
    get '/cards/get_schema' => 'cards#get_schema' 

    resources :cards do 
    end 

end 

的跑動路線

rake routes 

輸出

~/D/p/p/s/console_test> rake routes 
      Prefix Verb URI Pattern     Controller#Action 
cards_get_schema GET /cards/get_schema(.:format) cards#get_schema #<======== 
      cards GET /cards(.:format)   cards#index 
       POST /cards(.:format)   cards#create 
     new_card GET /cards/new(.:format)  cards#new 
     edit_card GET /cards/:id/edit(.:format) cards#edit 
      card GET /cards/:id(.:format)  cards#show #<======== 
       PATCH /cards/:id(.:format)  cards#update 
       PUT /cards/:id(.:format)  cards#update 
       DELETE /cards/:id(.:format)  cards#destroy 

在這種情況下/cards/get_schema將是頂層，不會與cards#show

Answer 3

Rails的衝突處理get_schema作爲卡的ID。解決的辦法是重新安排航線的聲明，就像這樣：

get '/cards/get_schema' => 'cards#get_schema' 

resources :cards do 
end 

這樣的get_schema路線將show路線之前進行匹配。