Couldn't it be handled with a mixin?
{{{
class _LoadCore(Base):
"""whatever you want for both classes here"""
pass
class Load(_LoadCore):
__tablename__ = 'load'
__mapper_args__ = {
'polymorphic_identity':'load',
'polymorphic_on':'polymorphic_type',
}
id = Column(Integer, primary_key=True)
polymorphic_type = Column(Text, nullable=False)
source_id = Column(Integer, ForeignKey('source.id'))
source = relationship('Source')
class Production_Load(_LoadCore):
__tablename__ = 'production_load'
__mapper_args__ = { 'polymorphic_identity':'production_load' }
id = Column(Integer, ForeignKey('load.id'), primary_key=True)
source_id = Column(Integer, ForeignKey('measured_source.id'))
source = relationship('Measured_Source')
}}
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