Changing how a mapped SQLAlchemy datetime field is serialized

[Keating950]

Hello all,

Let's say I have a SQLAlchemy ORM class that contains a datetime field. If I want to customize how this class is serialized (for example, to customize format), how would I go about this? Is this something handled at the DTO layer, or somewhere else?

import datetime
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


class Base(DeclarativeBase): ...


class Foobar(Base):
    created_on: Mapped[datetime.datetime]