"managed" attr of Model meta class losted during inheritance from abstract model

[vsafronovich]

class A(models.Model):
    class Meta:
        abstract = True
        managed = False

class B(A):
    pass
>>> B._meta.managed
True

must be False.

This needed for example for creating base model class for Models from legacy database.

[vsafronovich]

more correct example code

class A(models.Model):
    class Meta:
        abstract = True
        managed = False

class B(A):
    pass

class C(A):
    class Meta:
        db_table = 'ccc' 
>>> B._meta.managed
False
>>> C._meta.managed
True

[Ramiro Morales]

To achieve that, make C's inner Meta class inherit from A's one::

class C(A):
    class Meta(A.Meta):
        db_table = 'ccc' 

See ​https://docs.djangoproject.com/en/dev/topics/db/models/#meta-inheritance