Re: [sqlalchemy] Adding a listener on a backref

2015-03-24 Thread Cyril Scetbon
is not the right one. Le mardi 24 mars 2015 14:23:00 UTC+1, Michael Bayer a écrit : the “user” backref here is a relationship() like any other, just specify Address.user as the target of the event. Cyril Scetbon csce...@gmail.com javascript: wrote: Hi, Is there a way to add an event

[sqlalchemy] Adding a listener on a backref

2015-03-24 Thread Cyril Scetbon
Hi, Is there a way to add an event listener on a backref ? I have something like : class User(Base): __tablename__ = 'user' id = Column(Integer, primary_key=True) name = Column(String) addresses = relationship(Address, backref=user) class Address(Base): __tablename__ =

Re: [sqlalchemy] Loading of dependent objects performance issue

2015-03-18 Thread Cyril Scetbon
Thank you Michael you perfectly answered the question ! I just removed the custom primaryjoin condition and it works as expected -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To unsubscribe from this group and stop receiving emails from it, send

[sqlalchemy] Loading of dependent objects performance issue

2015-03-17 Thread Cyril Scetbon
Hi, After having read http://docs.sqlalchemy.org/en/latest/orm/loading_relationships.html I understand there is one case where SQL is not emitted and I was expecting that my case was this one. I use polymorphism to store different objects in the same table (only one type displayed here) as