Rails Devise gem-通过将其拆分为其他模型来定制默认用户模型
Rails Devise gem - customizing default User model by splitting it across other models

您也可以创建自己的关注点，而不必覆盖Devise内部。 之后，仅在模型上扩展Trackable module 。

    module Trackable
      def update_tracked_fields!(request)
        old_current, new_current = watchdog.current_sign_in_at, Time.now.utc
        watchdog.last_sign_in_at     = old_current || new_current
        watchdog.current_sign_in_at  = new_current

        old_current, new_current = self.current_sign_in_ip, request.ip
        watchdog.last_sign_in_ip     = old_current || new_current
        watchdog.current_sign_in_ip  = new_current

        watchdog.sign_in_count ||= 0
        watchdog.sign_in_count += 1

        watchdog.save(:validate => false)
      end
    end

但是不要忘记像在Devise hook上一样，将record.update_tracked_fields!(warden.request)放在Warden::Manager.after_set_user块上。