# File lib/friendly_id/active_record2.rb, line 14
    def has_friendly_id(method, options = {}, &block)
      class_inheritable_accessor :friendly_id_config
      write_inheritable_attribute :friendly_id_config, Configuration.new(self,
        method, options.merge(:normalizer => block))
      if friendly_id_config.use_slug?
        include SluggedModel
      else
        include SimpleModel
      end
    end