looks fine to me, would need full stack trace + single script file of runnable,
reproducing code, thanks.
On Nov 18, 2010, at 6:37 PM, Alvaro Reinoso wrote:
> Hello,
>
> When trying to add a new item doing:
>
> session = session.add(mediaGroup)
>
> I got this error:
>
> Module sqlalchemy.orm.attributes:834 in get_collection
> return getattr(user_data, '_sa_adapter')
> class GenericBackrefExtension(interfaces.AttributeExtension):>>
> return getattr(user_data, '_sa_adapter')
>
> "AttributeError: 'list' object has no attribute '_sa_adapter'"
>
> This object's class:
>
> class ScreenGroup(rdb.Model):
> """The ScreenGroup is a class derived from ScreenGroup, it is used to
> control users within a group"""
> rdb.metadata(metadata)
> rdb.tablename("screen_groups")
>
> id = Column("id", Integer, primary_key=True)
> title = Column("title", String(100))
> parents = Column("parents", String(512))
>
> screens = relationship("Screen", secondary=group_screens,
> order_by="Screen.title", backref="screen_groups")
> screenGroups = relationship("ScreenGroup",
> secondary=screen_group_groups, order_by="ScreenGroup.title",
> primaryjoin=lambda: ScreenGroup.id ==
> screen_group_groups.c.screen_groupA_id,
> secondaryjoin=lambda: ScreenGroup.id ==
> screen_group_groups.c.screen_groupB_id,
> backref="screen_groups")
>
> Thanks in advance!
>
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