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Includes url_for into the host class. The class has to provide a RouteSet by implementing the _routes method. Otherwise, an exception will be raised.

In addition to AbstractController::UrlFor, this module accesses the HTTP layer to define url options like the host. In order to do so, this module requires the host class to implement env and request, which need to be a Rack-compatible.

class RootUrl
  include ActionController::UrlFor
  include Rails.application.routes.url_helpers

  delegate :env, :request, to: :controller

  def initialize(controller)
    @controller = controller
    @url        = root_path # named route from the application.
  end
end
Methods
U
Included Modules
Instance Public methods
url_options()
# File actionpack/lib/action_controller/metal/url_for.rb, line 25
def url_options
  @_url_options ||= super.reverse_merge(
    :host => request.host,
    :port => request.optional_port,
    :protocol => request.protocol,
    :_recall => request.symbolized_path_parameters
  ).freeze

  if (same_origin = _routes.equal?(env["action_dispatch.routes"])) ||
     (script_name = env["ROUTES_#{_routes.object_id}_SCRIPT_NAME"]) ||
     (original_script_name = env['ORIGINAL_SCRIPT_NAME'])

    @_url_options.dup.tap do |options|
      if original_script_name
        options[:original_script_name] = original_script_name
      else
        options[:script_name] = same_origin ? request.script_name.dup : script_name
      end
      options.freeze
    end
  else
    @_url_options
  end
end