Cannot resolve fields from mixins

[orsinium]

The plugin can't find fields from mixins or abstract models.

class _UserMixin:
    some_field = s.Column(s.Integer)

class User(_UserMixin, Base):
    ...

User(some_field=1, ...)

Get error:

error: Unexpected column "some_field" for model "User"

Same error in this case:

class _UserBase(Base):
    __abstract__ = True
    some_field = s.Column(s.Integer)

class User(_UserBase):
    ...

User(some_field=1, ...)

[ilevkivskyi]

I didn't include this in the initial implementation because I didn't think it is a widely used feature. This should be quite straightforward to implement, essentially as I understand we will need to collect columns from the whole MRO instead of just the model class body.

[orsinium]

Thank you for your reply :) I personally don't like mixins, but there it is required because we have big batch of the same fields in the different models. We could avoid this through normalization, but this normalization would force us to use much of joins. It could slow down queries building (for developers) and execution (for database).

[MrSaints]

I believe this affects polymorphic models too: https://docs.sqlalchemy.org/en/latest/orm/inheritance.html

[ilevkivskyi]

Fixed by #80