// models.py
db.event.listen(User.declare, 'set', User.declare_cache)
File "E:\Program\python\1\myapp\models.py", line 156, in <module>
db.event.listen(User.declare, 'set', User.declare_cache)
AttributeError: 'SQLAlchemy' object has no attribute 'event'
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1
florije Jan 19, 2016
一般这么使用：
from sqlalchemy import event event.listen(something) |
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2
skywatcher OP @florije 上面那么用是用的 Flask-SQLAlchemy ；但是你说的这招也用过了，报的错是： TypeError: 'InstrumentedAttribute' object is not callable
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3
skywatcher OP @florije 对的，我之前忽略调用函数
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