Hi all,
I have a primary model with a "before_update" event and a secondary model
with a foreign key to the primary model. When I create a secondary model,
the primary model's "before_update" event is triggered. I believe this is
because the backref is being updated. Can I prevent this behavior?
class Primary(Model):
id = Column(Integer)
@event.listens_for(Primary, 'before_update')
def example(m, c, t):
print("I was triggered by a mapper update!")
class Secondary(Model):
primary_id = Column(ForeignKey)
primary = orm.relationship('Primary', backref='secondaries')
s = Secondary(primary_id=1)
session.add(s)
session.commit()
>>> I was triggered by a mapper update!
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