使用Peewee和SQLite格式化日期和时间

Question

I'm using Peewee to access a SQLite DB. How can I save a timestamp in the following format?

'%Y-%m-%d %H:%M:%S' # year-month-day hour-minute-second

(basically: just crop out the microseconds which are present by default)

EDIT: I was able to make this work, using the following in the class definition:

created = DateTimeField(default=datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S))

However, I'm still intersted to know if there's a "built in" way of doing this with Peewee, using the 'formats' parameter.

Answer 1

That actually won't work since the timestamp is evaluated at import time (or the time it's declared). Peewee actually doesn't care about the format going into the database, since it'll just take the python datetime object and let pysqlite convert it.

If you wanted, the best way would be to subclass DateTimeField and override the db_value method.