How to pass undefined=Undefined.EXCLUDE via mixin?

[TonalidadeHidrica]

I can use @dataclasses(undefined=Undefined.EXCLUDE) as an annotation to a class definition to specify the behavior for undefined fields. How can I specify it when I used Mixin instead of annotation?

[nrhoffmann]

I came across this somewhere.

@dataclass
class ApiRequest(DataClassJsonMixin):
    dataclass_json_config = config(
        letter_case=LetterCase.CAMEL,
        undefined=Undefined.EXCLUDE
    )['dataclasses_json']

See https://github.com/lidatong/dataclasses-json/issues/194.

[g0di]

I was looking for this, thank you! I think this should end up in the documentation as well.

[felixp98]

I was looking for this in the documentation, but couldn't find it.
Please consider adding it to the docs.