TTL与小矮人

Question

I feel a little strange asking this question, but I really have not been able to find an answer after pretty extensive googling.

Right now I'm using the peewee ORM on top of PostgresQL and I'm implementing a password reset. For obvious reasons I don't want to keep the password-reset keys around forever, so I'd like to create the object in postgres and have it expire after a set amount of time.

I can't find any mention of how to do this in the docs or on StackOverflow. This seems like a pretty common use case, but it seems that there isn't anything out there on how to actually do this. My model for reference:

class PostgresModel(Model):

    _id = PrimaryKeyField()

    class Meta:
        database = DATABASE

    @classmethod
    def create_and_commit(cls, **kwargs):
        cls.create(**kwargs)
        DATABASE.commit()

class ForgotPassword(PostgresModel):
    user = ForeignKeyField(BaseUser, related_name='password_reset')
    secret_key = CharField()

Anyone have insight on this?

Answer 1

在您的模型中添加一个DateTimeField以指示密钥何时过期（或何时创建），然后使用它来确定密钥是否有效。