Rails中默认RESTFUL路由的覆盖方法

给出下面的一行代码 routes.rb

map.resources :users

生成的路由可能是这样的:

      users GET    /users(.:format)           {:controller=>"users", :action=>"index"}
            POST   /users(.:format)           {:controller=>"users", :action=>"create"}
   new_user GET    /users/new(.:format)       {:controller=>"users", :action=>"new"}
  edit_user GET    /users/:id/edit(.:format)  {:controller=>"users", :action=>"edit"}
       user GET    /users/:id(.:format)       {:controller=>"users", :action=>"show"}
            PUT    /users/:id(.:format)       {:controller=>"users", :action=>"update"}
            DELETE /users/:id(.:format)       {:controller=>"users", :action=>"destroy"}

有没有办法将POST /users映射的默认HTTP方法更改{:controller=>"users", :action=>"create"}为用于PUT替代的HTTP方法？

rake routes 然后生成这样的东西:

      users GET    /users(.:format)           {:controller=>"users", :action=>"index"}
            PUT    /users(.:format)           {:controller=>"users", :action=>"create"}
   new_user GET    /users/new(.:format)       {:controller=>"users", :action=>"new"}
  edit_user GET    /users/:id/edit(.:format)  {:controller=>"users", :action=>"edit"}
       user GET    /users/:id(.:format)       {:controller=>"users", :action=>"show"}
            PUT    /users/:id(.:format)       {:controller=>"users", :action=>"update"}
            DELETE /users/:id(.:format)       {:controller=>"users", :action=>"destroy"}

我知道这对于RESTful路由是不正确的,我只是想知道是否可以更改这些路由使用的HTTP方法.