Hi,
I'm using polymorphism for some of my models and I'm wondering how I
should use the with_polymorphic query method.
Consider the following:
"""
class A(Base):
type_ = Column(Integer, nullable=False)
arg = Column(String(20))
__mapper_args__ = {'polymorphic_on': type_, 'polymorphic_identity': 0}
class B(A):
__mapper_args__ = {'polymorphic_identity': 1}
class C(A):
__mapper_args__ = {'polymorphic_identity': 2}
class D(A):
__mapper_args__ = {'polymorphic_identity': 3}
"""
When I query :
"""
session.query(A).with_polymorphic([B,C]).filter(A.arg == 'test')
"""
I get D elements in my result.
I've tried :
"""
session.query(A).with_polymorphic([B,C]).filter(or_(B.arg=='test',
C.arg=='test'))
"""
But it doesn't work neither.
Could somebody explain me what I did wrong and how I should do ?
Regards
Gaston
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