module ActionController::Caching::Actions::ClassMethods

def caches_action(*actions)
  return unless cache_configured?
  options = actions.extract_options!
  options[:layout] = true unless options.key?(:layout)
  filter_options = options.extract!(:if, :unless).merge(:only => actions)
  cache_options  = options.extract!(:layout, :cache_path).merge(:store_options => options)
  around_filter ActionCacheFilter.new(cache_options), filter_options
end