您可以使用此简单令牌身份验证 gem，众所周知，它会生成身份验证令牌并通过电子邮件发送给您想要进行此身份验证的用户.请按照安装说明进行操作.

You can use this Simple Token Authentication gem, it is well known to generate the authentication token and to be sent by email to the users you would like to have this authentication. please follow the setup instruction.