[BUG] Optional query enums do not have dropdowns/options in swagger/openAPI UI about django-ninja HOT 2 OPEN

While I'm not sure this is a bug in django-ninja per se (since the generated schema seems correct and that's what matters in the first place), I have found an ugly workaround to bring the dropdowns back thanks to Pydantic's json_schema_extra. Leaving it here for anyone facing the same issue:

class MySchema(Schema):
    my_enum: MyEnum
    # my_opt_enum: MyEnum | None = None
    my_opt_enum: MyEnum | None = Field(None, json_schema_extra={"enum": [e.value for e in MyEnum]}) 
                                                                  👆

This forcefully adds the "enum" spec right into the OpenAPI schema for my_opt_enum:

{"in": "query", "name": "my_opt_enum", "schema": {"anyOf": [{"$ref": "#/components/schemas/MyEnum"}, {"type": "null"}], "enum": ["foo", "bar", "baz"]}, "required": false}

And brings back the dropdown:

This workaround scales poorly and is ugly, so I would be glad to learn other solutions to this problem.

from django-ninja.

Is there a way to extend and overwrite schema generator classes to add extra json schema data?

from django-ninja.