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module ActionController
# Includes +url_for+ into the host class. The class has to provide a +RouteSet+ by implementing
# the <tt>_routes</tt> method. Otherwise, an exception will be raised.
#
# In addition to <tt>AbstractController::UrlFor</tt>, 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 instance of +ActionDispatch::Request+ or an object
# that responds to <tt>host</tt>, <tt>optional_port</tt>, <tt>protocol</tt> and
# <tt>symbolized_path_parameter</tt> 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
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