💭 Models - Pydantic
===================

!https://docs.pydantic.dev/latest/concepts/models/#rebuilding-model-schema

Date: January 28, 2025

Models - Pydantic Validation
 Data validation using Python type hints
 docs.pydantic.dev [1]

I came accross from_attributes today it allows creation of pydantic models from objects such as a sqlalchemy `Base` Model or while nesting pydantic models. I believe in the past I have ran into some inconsistencies with nesting pydantic models and I'll bet one had from_attributes set and another did not.

> Arbitrary class instances¶
> _(Formerly known as "ORM Mode"/from_orm)._
>
> Pydantic models can also be created from arbitrary class instances by reading the instance > attributes corresponding to the model field names. One common application of this functionality is integration with object-relational mappings (ORMs).
>
> To do this, set the from_attributes config value to True (see the documentation on Configuration for more details).
>
> The example here uses SQLAlchemy, but the same approach should work for any ORM.

!!! note

 This post is a thought [2]. It's a short note that I make
 about someone else's content online #thoughts [3]

References:
[1]: https://docs.pydantic.dev/latest/concepts/models/#rebuilding-model-schema
[2]: /thoughts/
[3]: /tags/thoughts/