Question

在我的HTML视图

中

<% if check_link(dashboard_path) %>
  <%= link_to "Products", dashboard_path, class: controller_name == "dashboard" ? "active" : nil %>
<% end %>

在check_link帮助方法中：

  def check_link(path)
    controller_name = path.controller
    method_name = path.action

    then i have some extra access verification code ............

  end

但是，我在浏览器中收到如下错误：

未定义的方法`controller＆＃39; for＆＃34; / admin / dashboard＆＃34;：String

现在，我的问题是如何从＆＃34;命名路径（dashboard_path）＆＃34;中找到控制器和方法名称。请有人帮我解决这个问题。

Answer 1

您可以使用Rails.application.routes.recognize_path来提取:controller和:action

def check_link(path)
  extracted_path =  Rails.application.routes.recognize_path(path)


  controller = extracted_path[:controller]
  action = extracted_path[:action]

  # your rest of the codes goes here
end

示例

Rails.application.routes.recognize_path('/parties/autocomplete_party_name_last', {:method => :get}) # Output will be {:action=>"autocomplete_party_name_last", :controller=>"parties"} OR Rails.application.routes.recognize_path('/transcriptions/2/edit') # Output will be => {:action=>"edit", :controller=>"transcriptions", :id=>"2"}

如果您的路径不正确，那么您将得到以下内容：

Rails.application.routes.recognize_path('dashboards/index') # output will be => {:controller=>"pages", :action=>"page_not_found", :url=>"dashboards/index"}

希望你觉得这很有用。

Answer 2

ActionDispatch :: Routing :: RouteSet #recognition_path

这可能会有所帮助。这将给出路径映射的控制器操作。

Answer 3

Rails.application.routes.recognize_path('/my_path')

Answer 4

dashboard_path是一个字符串，因此您无法在其上调用#controller和#action方法。尝试只是controller_name和method_name。或者params [：controller]和params [：action]

Answer 5

params哈希将始终包含:controller和:action个键，您可以尝试这个

def check_link(path)
    controller_name = params[:controller]
    method_name = params[:action]
end

Rails：如何获得控制器; Restful命名路由的方法名称？

5 个答案: