如何在Rails 5中構建動態路由？

Question

我使用Rails 5.我想構建形式

/my_objects/city_code 

的URL，我想它鏈接到我的控制器，my_objects_controller.rb，特別是這種方法

def search_by_code 
    ... 
    end 

然後在這個方法中，我想能夠提取「city_code」作爲變量。我不知道如何做到這一點的路線。我該如何解決這個問題？

編輯：我嘗試添加到現有的塊我已經有了你的路線......

resources :my_objects do 
    collection do 
     post 'create' 
     get 'import' 
     get '/index', to: redirect('/races/index') 
     get 'search' 
     get 'stats' 
     get ':code', to: '#search_by_code' 
    end 
    end 

，但它導致了下面的錯誤，當我開始我的應用程序...

/Users/davea/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.3/lib/action_dispatch/routing/mapper.rb:314:in `block (2 levels) in check_controller_and_action': '' is not a supported controller name. This can lead to potential routing problems. See http://guides.rubyonrails.org/routing.html#specifying-a-controller-to-use (ArgumentError) 

Answer 1

你必須在你的的config/routes.rb中：

get '/my_objects/:code', to: 'my_objects#show' 

然後在show動作你my_objects_controller.rb通過PARAMS [：代碼]到模型：

MyObject.search_by_code(params[:code]) 

在my_object.rb型號：

def self.search_by_code(code) 
    MyObject.where(code: code) 
end 

修復根據問題編輯：

固定的routes.rb：

resources :my_objects do 
    collection do 
     post 'create' 
     get 'import' 
     get '/index', to: redirect('/races/index') 
     get 'search' 
     get 'stats' 
     get ':code', to: 'my_objects#search_by_code' 
    end 
    end 

運行這從終端：

rake routes 

，它會輸出：

 Prefix Verb URI Pattern     Controller#Action 
     my_objects POST /my_objects/create(.:format) my_objects#create 
import_my_objects GET /my_objects/import(.:format) my_objects#import 
index_my_objects GET /my_objects/index(.:format) redirect(301, /races/index) 
search_my_objects GET /my_objects/search(.:format) my_objects#search 
stats_my_objects GET /my_objects/stats(.:format) my_objects#stats 
        GET /my_objects/:code(.:format) my_objects#search_by_code 
        GET /my_objects(.:format)   my_objects#index 
        POST /my_objects(.:format)   my_objects#create 
    new_my_object GET /my_objects/new(.:format)  my_objects#new 
    edit_my_object GET /my_objects/:id/edit(.:format) my_objects#edit 
     my_object GET /my_objects/:id(.:format)  my_objects#show 
        PATCH /my_objects/:id(.:format)  my_objects#update 
        PUT /my_objects/:id(.:format)  my_objects#update 
        DELETE /my_objects/:id(.:format)  my_objects#destroy 

正如你可以看到你有兩個相同的路徑：

GET /my_objects/:code(.:format) 

和

GET /my_objects/:id(.:format) 

這可能會導致一個問題。如果不是問題，它是一種重複和糟糕的小代碼。