instiki/vendor/rails/actionpack/lib/action_controller/caching/sweeper.rb

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require 'active_record'
module ActionController #:nodoc:
module Caching
class Sweeper < ActiveRecord::Observer #:nodoc:
attr_accessor :controller
def before(controller)
self.controller = controller
callback(:before) if controller.perform_caching
end
def after(controller)
callback(:after) if controller.perform_caching
# Clean up, so that the controller can be collected after this request
self.controller = nil
end
protected
# gets the action cache path for the given options.
def action_path_for(options)
ActionController::Caching::Actions::ActionCachePath.path_for(controller, options)
end
# Retrieve instance variables set in the controller.
def assigns(key)
controller.instance_variable_get("@#{key}")
end
private
def callback(timing)
controller_callback_method_name = "#{timing}_#{controller.controller_name.underscore}"
action_callback_method_name = "#{controller_callback_method_name}_#{controller.action_name}"
__send__(controller_callback_method_name) if respond_to?(controller_callback_method_name, true)
__send__(action_callback_method_name) if respond_to?(action_callback_method_name, true)
end
def method_missing(method, *arguments, &block)
return if @controller.nil?
@controller.__send__(method, *arguments, &block)
end
end
end
end