module ActionController # 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+ which needs to be Rack-compatible and +request+ # which is either an instance of +ActionDispatch::Request+ or an object # that responds to the +host+, +optional_port+, +protocol+ and # +symbolized_path_parameter+ methods. # # 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 module UrlFor extend ActiveSupport::Concern include AbstractController::UrlFor def url_options @_url_options ||= { :host => request.host, :port => request.optional_port, :protocol => request.protocol, :_recall => request.path_parameters }.merge!(super).freeze if (same_origin = _routes.equal?(request.routes)) || (script_name = request.engine_script_name(_routes)) || (original_script_name = request.original_script_name) options = @_url_options.dup 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 else @_url_options end end end end