Hello.
I'v get this error while add new record to Service table.
"many-to-many relation, 'secondaryjoin' is needed as well." %
(self))
sqlalchemy.exc.ArgumentError: Could not determine join condition
between parent/child tables on relation Service.services. Specify a
'primaryjoin' expression. If this is a many-to-many relation,
'secondaryjoin' is needed as well.
services_table = Table('service', metadata,
Column('id', types.Integer, primary_key=True, autoincrement=True),
Column('table', types.Unicode(10)), # a or b
Column('name', types.Unicode(255), nullable=False),
Column('code', types.Integer),
)
service_btype_table = Table('service_btype', metadata,
Column('service_b_id', types.Integer, ForeignKey('service.id'),
primary_key=True),
Column('service_a_id', types.Integer, ForeignKey('service.id'),
primary_key=True)
)
mapper(Service, services_table,
properties={'services': relation(Service, backref='services',
secondary=service_btype_table)})
Whats wrong in code?
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