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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