ruby-on-rails - Ruby on Rails - 设计用户/sign_out 不工作

Question

我正在使用设计sign_in 和 sign_up 网址有效

但是，当我尝试 url 时:http://localhost:3000/users/sign_out

它产生路由错误

No route matches [GET] "/users/sign_out"

我该如何解决这个问题？

rake 路

rake routes
        new_user_session GET    /users/sign_in(.:format)           {:action=>"new", :controller=>"devise/sessions"}
            user_session POST   /users/sign_in(.:format)           {:action=>"create", :controller=>"devise/sessions"}
    destroy_user_session DELETE /users/sign_out(.:format)          {:action=>"destroy", :controller=>"devise/sessions"}
           user_password POST   /users/password(.:format)          {:action=>"create", :controller=>"devise/passwords"}
       new_user_password GET    /users/password/new(.:format)      {:action=>"new", :controller=>"devise/passwords"}
      edit_user_password GET    /users/password/edit(.:format)     {:action=>"edit", :controller=>"devise/passwords"}
                         PUT    /users/password(.:format)          {:action=>"update", :controller=>"devise/passwords"}
cancel_user_registration GET    /users/cancel(.:format)            {:action=>"cancel", :controller=>"devise/registrations"}
       user_registration POST   /users(.:format)                   {:action=>"create", :controller=>"devise/registrations"}
   new_user_registration GET    /users/sign_up(.:format)           {:action=>"new", :controller=>"devise/registrations"}
  edit_user_registration GET    /users/edit(.:format)              {:action=>"edit", :controller=>"devise/registrations"}
                         PUT    /users(.:format)                   {:action=>"update", :controller=>"devise/registrations"}
                         DELETE /users(.:format)                   {:action=>"destroy", :controller=>"devise/registrations"}
    status_message_index GET    /status_message(.:format)          {:action=>"index", :controller=>"status_message"}
                         POST   /status_message(.:format)          {:action=>"create", :controller=>"status_message"}
      new_status_message GET    /status_message/new(.:format)      {:action=>"new", :controller=>"status_message"}
     edit_status_message GET    /status_message/:id/edit(.:format) {:action=>"edit", :controller=>"status_message"}
          status_message GET    /status_message/:id(.:format)      {:action=>"show", :controller=>"status_message"}
                         PUT    /status_message/:id(.:format)      {:action=>"update", :controller=>"status_message"}
                         DELETE /status_message/:id(.:format)      {:action=>"destroy", :controller=>"status_message"}
                    home        /home(.:format)                    {:action=>"index", :controller=>"status_message"}
                    root        /                                  {:controller=>"home", :action=>"index"}

路线.rb

Microblog::Application.routes.draw do
  devise_for :users, :controllers => {:migrations => "users/registrations"}
  resources 'status_message'
  match 'home' => 'status_message#index'
  root :to => 'home#index'
end

Answer 1

错误的原因是使用 GET HTTP 方法无法访问该路由。请注意您的 rake routes 输出中的相关行:

destroy_user_session DELETE /users/sign_out(.:format)

意思是，如果你想注销用户，你需要向那个 url 发送一个 DELETE 请求。在 Rails 中，您可以生成这样的链接:

link_to 'Sign out', destroy_user_session_path, :method => :delete

# alternatively (although NOT recommended):

link_to 'Sign out', '/users/sign_out', :method => :delete

重要的部分是:method => :delete。请注意，浏览器并不真正支持 DELETE 请求，rails 实际上是在 POST 数据，但它会发送一个模拟 DELETE 方法的特殊参数。

这背后的原因是“注销”url 会注销当前用户，这是一种破坏性操作。如果它可以通过浏览器自由访问，它可能会导致各种问题。 GET 请求不应该改变服务器的状态。有关这方面的更多信息，这里有一篇不错的维基百科文章:http://en.wikipedia.org/wiki/REST#RESTful_web_services