link_to(:controller=>"something") helper + Devise 无法正常工作答案

【问题标题】：link_to(:controller=>"something") helper + Devise doesn't work properlylink_to(:controller=>"something") helper + Devise 无法正常工作
【发布时间】：2011-06-15 17:32:52
【问题描述】：

全部！也许有人知道这是为什么：

def index_link(object, content = t("#{object.to_s.pluralize}.index"))
  #link_to(content, {:controller=>object.to_s.pluralize}, :scope=>"") if can?(:read, p(object)) #this doesn't work too
  link_to(content, :controller=>"trademarks")
  #link_to(content, trademarks_path) #this do work, but I need to set path from object
end

这样例外：

No route matches {:controller=>"devise/trademarks"}

堆栈：

actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:424:in `raise_routing_error'
actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:406:in `generate'
actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:453:in `generate'
actionpack (3.0.3) lib/action_dispatch/routing/route_set.rb:481:in `url_for'
actionpack (3.0.3) lib/action_dispatch/routing/url_for.rb:131:in `url_for'
actionpack (3.0.3) lib/action_view/helpers/url_helper.rb:99:in `url_for'
actionpack (3.0.3) lib/action_view/helpers/url_helper.rb:236:in `link_to'
app/helpers/application_helper.rb:53:in `index_link'
app/views/layouts/application.html.erb:20:in `_app_views_layouts_application_html_erb___741328535__615736668_0'
actionpack (3.0.3) lib/action_view/template.rb:135:in `send'
actionpack (3.0.3) lib/action_view/template.rb:135:in `render'

以及如何让它发挥作用？

【问题讨论】：

“我需要从对象设置路径”是什么意思？
您能从您的控制台说明 rake 路由的输出吗？
@Heikki，我需要 index_link 方法才能工作。
@ecologic，除了设计页面之外，所有应用程序中的路由都是正确的并且工作正常（设计为 link_to 或类似的东西定义了一些范围，它将设计/添加到我的变量中）
这个方法是在哪里定义的？

标签： ruby-on-rails-3 url-routing helpers

【解决方案1】：

您必须在路径中添加一个斜杠。例如：

<li><%= link_to "Events" , :controller => "/events", :action => "index" %></li>

来源： https://github.com/plataformatec/devise/issues/471#issue/471/comment/395243

【讨论】：

【解决方案2】：

这是 rake 路由的一部分：

      new_user_session GET    /users/login(.:format)         {:controller=>"devise/sessions", :action=>"new"}
          user_session POST   /users/login(.:format)         {:controller=>"devise/sessions", :action=>"create"}
  destroy_user_session GET    /users/logout(.:format)        {:controller=>"devise/sessions", :action=>"destroy"}
         user_password POST   /users/password(.:format)      {:controller=>"devise/passwords", :action=>"create"}
     new_user_password GET    /users/password/new(.:format)  {:controller=>"devise/passwords", :action=>"new"}
    edit_user_password GET    /users/password/edit(.:format) {:controller=>"devise/passwords", :action=>"edit"}
                       PUT    /users/password(.:format)      {:controller=>"devise/passwords", :action=>"update"}
     user_registration POST   /users(.:format)               {:controller=>"devise/registrations", :action=>"create"}
 new_user_registration GET    /users/register(.:format)      {:controller=>"devise/registrations", :action=>"new"}
edit_user_registration GET    /users/edit(.:format)          {:controller=>"devise/registrations", :action=>"edit"}
                       PUT    /users(.:format)               {:controller=>"devise/registrations", :action=>"update"}
                       DELETE /users(.:format)               {:controller=>"devise/registrations", :action=>"destroy"}
                       GET    /content/:id-:alias(.:format)  {:controller=>"contents", :action=>"show", :id=>/\d+/}
              contents GET    /content(.:format)             {:controller=>"contents", :action=>"index"}
                       POST   /content(.:format)             {:controller=>"contents", :action=>"create"}
           new_content GET    /content/new(.:format)         {:controller=>"contents", :action=>"new"}
          edit_content GET    /content/:id/edit(.:format)    {:controller=>"contents", :action=>"edit"}
               content GET    /content/:id(.:format)         {:controller=>"contents", :action=>"show"}
                       PUT    /content/:id(.:format)         {:controller=>"contents", :action=>"update"}
                       DELETE /content/:id(.:format)         {:controller=>"contents", :action=>"destroy"}
            trademarks GET    /trademarks(.:format)          {:controller=>"trademarks", :action=>"index"}
                       POST   /trademarks(.:format)          {:controller=>"trademarks", :action=>"create"}
         new_trademark GET    /trademarks/new(.:format)      {:controller=>"trademarks", :action=>"new"}
        edit_trademark GET    /trademarks/:id/edit(.:format) {:controller=>"trademarks", :action=>"edit"}
             trademark GET    /trademarks/:id(.:format)      {:controller=>"trademarks", :action=>"show"}
                       PUT    /trademarks/:id(.:format)      {:controller=>"trademarks", :action=>"update"}
                       DELETE /trademarks/:id(.:format)      {:controller=>"trademarks", :action=>"destroy"}

请求的页面是 /users/edit。该错误仅发生在设计控制器中。

【讨论】：