assimilator/core/services/crud.py", line 37, in update
obj.dict.update(update_obj.dict)

Raises an AttributeError: 'NoneType' object has no attribute 'dict'

Because:
line 33: update_obj = self.uow.repository.update() returns a 'NoneType' object that has no attribute 'dict'

CRUDService update() gives out 'update_obj not defined' errors when using models instead of dictionaries in obj_data.

Problem with SQLAlchemy 2 DeclarativeBase model imports

There is a new class for DeclarativeBase models in SQLAlchemy 2. The problem is in AlchemyRepository querying. If the model import is different from the one in the Repository creation, then SQLAlchemy adds another SQL table selection to the query. That results in big overheads and possible sql errors.

Example:

SELECT * FROM users, users WHERE users.id = 1

However, the query should be:

SELECT * FROM users WHERE users.id = 1

Pydantic V2 migration

Pydantic released a new version, and PyAssimilator should also support PydanticV2. But, since other libraries and projects do not fully support it yet, our main release is not going to support Pydantic V2 for now. We will add support for Pydantic V2 mid August.

Migration guide: https://docs.pydantic.dev/2.0/migration/
Migration branch: https://github.com/knucklesuganda/py_assimilator/tree/feature/pydantic_v2