[Python] Serialize nested Pydantic model as a single value

Let's say I have this Id class:

class Id(BaseModel):
value: Optional[str]


The main point in this class, is that it serialized into one singular value (mostly string).

And I use that model inside another model:

class Item(BaseModel):
id: Id
name: str


Everything works alright here. But when I generate the dict of an Item instance, it is generated like this:

{'id': {'value': 'my id here'}, 'name': 'my name'}


Same thing for the json generation.

I want it to be generated like this:

{'id': 'my id here', 'name': 'my name'}


And still keep the same models. How do I do that?

Continue reading...