How to include or exclude fields for list of nested models?

[SDAravind]

I would like to include or exclude on list of nested models. How would I do that with below example? Please point me in right direction that would help me solve this.

from pydantic import BaseModel


class Foo(BaseModel):
    a: str
    b: int


class Bar(BaseModel):
    c: str
    d: Foo
    e: list[Foo]


Bar(
    c="test", d=Foo(a="foo", b=10), e=[Foo(a="test1", b=1), Foo(a="test2", b=2)]
).model_dump(include={"c": True, "d": {"b"}, "e": {"a"}})
)
>>> {'c': 'test', 'd': {'b': 10}, 'e': []}

Expected Output: I would like see below output

>>> {'c': 'test', 'd': {'b': 10}, 'e': [{'a': 'test1'}, {'a': 'test2'}]}

[xtendch]

Does #6699 provide any answers?

[SDAravind]

Nope.

[AlessandroMiola]

Hi @SDAravind,
the following should do the trick:

bar.model_dump(include={"c": True, "d": {"b"}, "e": {"__all__": {"a"}}})

Quoting the docs

Special care must be taken when including or excluding fields from a list or tuple of submodels or dictionaries. In this scenario, model_dump and related methods expect integer keys for element-wise inclusion or exclusion. To exclude (ed. or include) a field from every member of a list or tuple, the dictionary key '__all__' can be used, as shown here