Rails在devise中使用link_to的正確方法

Question

我現在開始使用Rails並設計用於身份驗證，我想創建一個鏈接以在用戶登錄到管理頁面時注銷。

編寫link_to code的正確方法是什么

這是我的rake routes ：

admin_index        /admin/index(.:format)         {:controller=>"admin/home", :action=>"index"}
        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"}
              home_index GET    /home/index(.:format)          {:controller=>"home", :action=>"index"}
                    root        /                              {:controller=>"home", :action=>"index"}

我試過<%= link_to "Sign Out", destroy_user_session_path %>但是當我單擊鏈接時，它給了我錯誤：

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

Answer 1

通過這個devise示例應用程序 ，在Devise Wiki上推薦：

<% if user_signed_in? %>
  <li><%= link_to 'Edit account', edit_user_registration_path %></li>
  <li><%= link_to 'Sign out', destroy_user_session_path, :method=>'delete' %></li>
<% end %>

Answer 2

問題的根本原因是您沒有在“ link_to”中使用RESTful路由。

您應該將代碼更正為：

<%= link_to "Sign Out", destroy_user_session_path, :method => :delete %>

這樣就可以匹配路線

DELETE /users(.:format)  {:action=>"destroy", :controller=>"devise/registrations" }