userstamps.rb

module InheritedResources
  module Userstamp
    def create_resource(obj)
      record_user(obj, :creator, :updater)
      super
    end
 
    def update_resource(obj, *args)
      record_user(obj, :updater)
      super
    end
 
    def destroy_resource(obj, *args)
      record_user(obj, :deleter)
      super
    end
 
  protected
    def record_user(obj, *roles)
      return unless current_user
      roles.each do |role|
        writer = :"#{role}="
        obj.send(writer, user) if obj.respond_to?(writer)
      end
    end
  end
end

InheritedResources::Base.send :include, InheritedResources::Userstamp