timeoutable 是指登录会话超时。不需要额外的列，只需将其添加到您的模型中。

timeoutable refers to the login session timeout. No extra columns are needed, just add it to your model.

可暂存挂钩包含所有魔法： https://github.com/plataformatec/devise/blob/master/lib /devise/hooks/timeoutable.rb ）

The timeoutable hook contains all the magic (source: https://github.com/plataformatec/devise/blob/master/lib/devise/hooks/timeoutable.rb)