My mind keeps going back to events but of course there's the limitation to
modifying Session state while handling various events. (
http://docs.sqlalchemy.org/en/rel_0_7/orm/events.html#sqlalchemy.orm.events.MapperEvents.after_update
)
But what about using the SQL Expression API?
*Relevant code snippet:*
class MyModel(Base):
__tablename__ = "MyTable"
priid = Column(Integer(), primary_key=True)
secid = Column(Integer())
@listens_for(MyModel, 'after_insert')
def mymodel_after_insert(mapper, connection, target):
mytable = MyModel.__table__
priid = target.priid
statement = (mytable.update()
.where(mytable.c.priid == priid)
.values(secid=priid))
connection.execute(statement)
Full code for reference:
http://paste.pound-python.org/show/WVciGm4jCxgvz84jKrZy/
SQLA echo: http://paste.pound-python.org/show/hSyCGisr0X5eupVdyk3f/
The echo looks sane, though I can't be sure how the SQLAchemy internals are
affected by this.
Thank you for your input, Michael.
Nick
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