🔒 Type Error: TypeVar for cls?

[swift plinth]

from sqlalchemy.ext.declarative import declared_attr
from sqlalchemy.orm import foreign, relationship
from sqlalchemy.sql.expression import and_
from app.models.translation.translation import Translation


class TranslatableMixin:
    @declared_attr
    def translations(cls):
        return relationship(
            Translation,
            # FIX: Pyright type error
            primaryjoin=and_(
                foreign(Translation.translatable_id) == cls.id,
                Translation.translatable_type == cls.__tablename__,
            ),
            remote_side=[Translation.translatable_id],
            viewonly=True,
        )

    def get_translation(self, field: str, language: str = "en"):
        return next(
            (
                t.translation
                for t in self.translations
                if t.field_name == field and t.language.iso639 == language
            ),
            None,
        )

error: Cannot access member "id" for type "TranslatableMixin*"  Member "id" is unknown 14:61:9 Pyright reportGeneralTypeIssues

Is there a way to fix this typing error?

[dapper gate]

@swift plinth

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[swift plinth]

foreign(Translation.translatable_id) == cls.id, Translation.translatable_type == cls.__tablename__)

error here since cls is TranslatableMixin, instead of the model it's inherited from

[nimble sand]

You can do something like this ```py
from typing import ClassVar

class TranslatableMixin:
id: ClassVar[TypeOfIdThatYouExpect]

...

TypeOfIdThatYouExpect being the Column descriptor or whatever sqlalchemy uses

[swift plinth]

that works, thanks

!close

[dapper gate]

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