I'm using the declarative style and unable to to get a mapper to initialize.
Here's a simplified version of the class from client_transaction.py:
class ClientTransaction(Base):
__tablename__ = 'client_transactions'
id = Column(Integer, primary_key=True)
client_promotion_id = Column(Integer,
ForeignKey('clients_promotions.id'))
client_promotion = relationship('ClientPromotion',
primaryjoin='ClientTransction.client_promotion_id == ClientPromotion.id')
And here's the error:
InvalidRequestError: One or more mappers failed to initialize - can't
proceed with initialization of other mappers. Original exception was: When
initializing mapper Mapper|ClientTransaction|client_transactions, expression
'ClientPromotion' failed to locate a name ("name 'ClientPromotion' is not
defined"). If this is a class name, consider adding this relationship() to
the <class 'uber.model.client_transaction.ClientTransaction'> class after
both dependent classes have been defined.
Which seems to be in conflict with this statement from the docs:
In addition to the main argument for relationship(), other arguments which
depend upon the columns present on an as-yet undefined class may also be
specified as strings.
For the sake of reference, here's the other class in client_promotion.py as
well:
class ClientPromotion(SmartModel):
__tablename__ = 'clients_promotions'
id = Column(Integer, primary_key=True)
client_transaction_id = Column(Integer,
ForeignKey('client_transactions.id'))
client_transaction = relationship('ClientTransaction',
primaryjoin='ClientPromotion.client_transaction_id == ClientTransaction.id',
uselist=False)
Any help on getting a 'client_promotion' attribute on the
'ClientTransaction' class would be greatly appreciated.
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