actionpack/lib/action_controller/metal/url_for.rb
# frozen_string_literal: true
# :markup: markdown
module ActionController
# # Action Controller UrlFor
#
# 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 returns an ActionDispatch::Request instance.
#
# 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 initialize(...)
super
@_url_options = nil
end
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
if same_origin
options[:script_name] = request.script_name.empty? ? "" : request.script_name.dup
else
options[:script_name] = script_name
end
end
options.freeze
else
@_url_options
end
end
end
end