gistfile1.rb

  def add_route
    path = name
    opts = route_options
    Rails.application.routes.disable_clear_and_finalize = true
    Rails.application.routes.draw do
      get path, opts
    end
    Rails.application.routes.finalize!
    Rails.application.routes.disable_clear_and_finalize = false
  end

  def route_options
    @route_options ||= { controller:   navigable.controller,
                         action:       navigable.action,
                         navigable_id: navigable_id,
                         slug_id:      id }
  end