如何在Rails 5中构建动态路由？

Question

我使用Rails 5.我想构建形式

/my_objects/city_code 

的URL，我想它链接到我的控制器，my_objects_controller.rb，特别是这种方法

def search_by_code 
    ... 
    end 

然后在这个方法中，我想能够提取“city_code”作为变量。我不知道如何做到这一点的路线。我该如何解决这个问题？

编辑：我尝试添加到现有的块我已经有了你的路线......

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 

，但它导致了下面的错误，当我开始我的应用程序...

/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

你必须在你的的config/routes.rb中：

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

然后在show动作你my_objects_controller.rb通过PARAMS [：代码]到模型：

MyObject.search_by_code(params[:code]) 

在my_object.rb型号：

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

修复根据问题编辑：

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 

运行这从终端：

rake routes 

，它会输出：

 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两个相同的路径：

GET /my_objects/:code(.:format) 

和

GET /my_objects/:id(.:format) 

这可能会导致一个问题。如果不是问题，它是一种重复和糟糕的小代码。