ruby-on-rails - Rails 在设计中使用 link_to 的正确方法

Question

我开始使用 rails 和 devise 进行身份验证，我想创建一个链接以在用户登录到管理页面时注销。

link_to code 的正确写法是什么？

这是我的 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"}

我试过了 <%= link_to "Sign Out", destroy_user_session_path %>但是当我点击链接时，它给了我错误:

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

Answer 1

从这里devise sample application , 推荐上Devise wiki :

<% 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 %>