First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the SQLModel documentation, with the integrated search.
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• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to SQLModel but to Pydantic.
• I already checked if it is not related to SQLModel but to SQLAlchemy.

Commit to Help

• I commit to help with one of those options 👆

Example Code

from datetime import datetime
from typing import Optional

from sqlalchemy.orm import declared_attr
from sqlmodel import Field, Relationship, SQLModel


class ModelMixin:
    __name__: str
    __config__ = {}

    created_at: datetime = Field(default_factory=datetime.utcnow)
    update_at: datetime = Field(default=datetime.utcnow)
    deleted_at: datetime = Field(default=None, nullable=True)


class Phone(ModelMixin, SQLModel, table=True):

    id: Optional[int] = Field(default=None, primary_key=True)
    cellphone: str
    is_active: Optional[bool] = Field(default=True)

Description

• Created the ModelMixin with fields
• Created the model Phone
• extends ModelMixin in Phone
• When run code "SQLModel.metadata.create_all(self._engine)" only fields in Phone is created
• The fields created_at, update_at and deleted_at is ignorated

Operating System

macOS

Operating System Details

macos 12.3.1

SQLModel Version

0.0.6

Python Version

Python 3.9.9

Additional Context

No response