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+ 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
module UrlFor
extend ActiveSupport::Concern
include AbstractController::UrlFor
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 _routes.equal?(env["action_dispatch.routes"])
@_url_options.dup.tap do |options|
options[:script_name] = request.script_name.dup
options.freeze
end
else
@_url_options
end
end
end
end