hello, here's a test case:
https://gist.github.com/plq/5ed0c135222ea76d77fc (also see below) is it possible to preserve the polymorphic_identity values of subclasses that contain changes to non-sqla parts of a class? I understand that the reason for this is D2.__mapper__.class_ != D2. Is there a way to clone the class mapper and change just the mapped class? best, burak ps: the test case: from sqlalchemy import Column, Integer from sqlalchemy.ext.declarative import declarative_base Base = declarative_base() class C(Base): __tablename__ = 'C' id = Column(Integer, primary_key=True) t = Column(Integer) __mapper_args__ = { 'polymorphic_on': t, 'polymorphic_identity': 1, } assert C().t == 1 class D(C): __mapper_args__ = { 'polymorphic_identity': 2, } assert D().t == 2 class D2(D): foo = 'bar' assert D2().t == 2 -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
