def delete(obj):
"""
从数据库中删除一条数据
:param obj: 要删除的对象
:return: 成功或失败
"""
with MyTransaction(db_session) as transaction:
db_session.delete(obj)
return transaction.status
def delete_all(cls):
"""
从数据库中删除一张表所有的数据
:param cls: 数据表对应的类
:return: 成功或失败
"""
objs = query_all(cls)
with MyTransaction(db_session) as transaction:
for obj in objs:
db_session.delete(obj)
return transaction.status