限制 Rails 中嵌套资源的路由

Question

我正在尝试创建子资源不存在的嵌套资源。例如，链接到 Person 的 Address 资源。

我的路由声明如下所示：

map.resources :persons,
:has_many => :addresses

这给了我以下路线：

             person_addresses GET    /persons/:person_id/addresses                  {:controller=>"addresses", :action=>"index"}
   formatted_person_addresses GET    /persons/:person_id/addresses.:format          {:controller=>"addresses", :action=>"index"}
                              POST   /persons/:person_id/addresses                  {:controller=>"addresses", :action=>"create"}
                              POST   /persons/:person_id/addresses.:format          {:controller=>"addresses", :action=>"create"}
           new_person_address GET    /persons/:person_id/addresses/new              {:controller=>"addresses", :action=>"new"}
 formatted_new_person_address GET    /persons/:person_id/addresses/new.:format      {:controller=>"addresses", :action=>"new"}
          edit_person_address GET    /persons/:person_id/addresses/:id/edit         {:controller=>"addresses", :action=>"edit"}
formatted_edit_person_address GET    /persons/:person_id/addresses/:id/edit.:format {:controller=>"addresses", :action=>"edit"}
               person_address GET    /persons/:person_id/addresses/:id              {:controller=>"addresses", :action=>"show"}
     formatted_person_address GET    /persons/:person_id/addresses/:id.:format      {:controller=>"addresses", :action=>"show"}
                              PUT    /persons/:person_id/addresses/:id              {:controller=>"addresses", :action=>"update"}
                              PUT    /persons/:person_id/addresses/:id.:format      {:controller=>"addresses", :action=>"update"}
                              DELETE /persons/:person_id/addresses/:id              {:controller=>"addresses", :action=>"destroy"}
                              DELETE /persons/:person_id/addresses/:id.:format      {:controller=>"addresses", :action=>"destroy"}

现在我想确保一个人的地址是只读的，即我只想要地址的 show 和 index 操作。

我试过这个：

  map.resources :persons,
  :has_many => :addresses,
  :collection => { :addresses => [ :show, :index ] }

得到了这个错误：

(in /home/rmk/app)
rake aborted!
Invalid HTTP method specified in route conditions: {:method=>:show}

(See full trace by running task with --trace)

有什么方法可以实现吗？

编辑： 我的主要问题是我没有正确使用代码块（我想尽可能使用 has_one 等）。所以我的persons 路线看起来像这样（有点人为的例子）：

map.resources :persons, :has_one => :ssn, :except => [:new, :edit] do |person|
 person.resources :addresses, :only => [:index, :show]
end

Answer 1

这是你想要做的吗？

map.resources :persons do |person|
  person.resources :addresses, :only => [:index, :show]
end

这会将地址创建为人员的嵌套资源，但只会使索引和显示视图可用。