Rails: How to get the controller & method name of Restfull named routes?

Question

In my HTML View

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

In check_link helper method:

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

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

  end

But, I am getting error like below in the browser:

undefined method `controller' for "/admin/dashboard":String

Now, My question is how to find the controller and method name from the "Named routes(dashboard_path)". Please someone help me to resolve this issue.

Answer 1

You can use Rails.application.routes.recognize_path for extracting your :controller and :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

Example

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"}

If your path is incorrect then you will get something like this:

Rails.application.routes.recognize_path('dashboards/index')

# output will be
=> {:controller=>"pages", :action=>"page_not_found", :url=>"dashboards/index"}

Hope you find this useful.