在Ruby on Rails中访问给定路径的控制器命令

Question

In Ruby on Rails is there a way to get a string of the contoller command corresponding to a given path? For example, given route

  get 'add_address' => 'locations#new'

The code:

puts add_address_path.some_method

Would output

'locations#new'

Answer 1

Routes are pretty well encapsulated in the routes file, and I'm not sure how you would go about sending a message to an object named after the route to extract the controller and action.

If you're open to an alternative, you could try prying it out with something like this:

class MyRouteParser < Struct.new(:named_route)

  include Rails.application.routes.url_helpers

  def controller
    @parsed[:controller]
  end

  def action
    @parsed[:action]
  end

  def controller_with_action
    "#{controller}\##{action}"
  end

  private

  def parse
    @parsed ||= Rails.application.routes.recognize_path(named_route)
  end
end

This would provide the string you want with:

route = MyRouteParser.new("add_address_path")
route.controller_with_action

"locations#new"