Ruby on rails 3 Rails 3：这条路线有什么作用？

想了解一下这条路线的工作原理吗

新路线：

resources :artists do
  resources :users
end

全线

---

这将创建嵌套路由，允许您使用URL，如

/artists/5/users/45

，它将调用UsersController#show，其中参数

artist\u id

为5，参数

id

为45。所有其他常用的RESTful路由也都是在一个艺术家下“嵌套”创建的

Rails实际上有一个工具可以向您显示生成了哪些路由：只需运行

rake routes

查看一下

 resources :artists do
    resources :users
  end

  match 'auth/:provider/callback' => 'authentications#create'
  resources :authentications

  devise_for :admins
  match '/admin' => 'RailsAdmin/Main#index'

  devise_for :users, :controllers => {:registrations => 'registrations'} do
    match '/users/change_password', :to => 'registrations#change_password'
    match '/users/edit_account', :to => 'registrations#edit_account'
  end


  resources :posts do
      member do
      get :likers
      end
      collection do
        get :search
      end
  end  

  resources :relationships, :only => [:create, :destroy]
  resources :appreciations, :only => [:create, :destroy]

  match '/a_json/:id', :to => 'artists#index'
  match '/s_json/:id', :to => 'stores#index'

  match '/contact', :to => 'pages#contact'
  match '/about',   :to => 'pages#about'
  match '/help',    :to => 'pages#help'
  match '/blog',    :to => 'pages#blog'


  resources :users do
     member do
     get :following, :followers, :likes
     end
 end

  # This is a legacy wild controller route that's not recommended for RESTful applications.
  # Note: This route will make all actions in every controller accessible via GET requests.
  # match ':controller(/:action(/:id(.:format)))'
    match '/:id' => 'users#show', :constraints => {:id => /[^\/]+/}, :as => :global_user
    root :to => "pages#home"
end