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# Includes #url_for into the host class. The class has to provide a RouteSet by implementing
# the #_routes methods. 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.
#
# Example:
#
# 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
module ActionController
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,
:_path_segments => 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
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