Combine Form and PatchDict for a PUT/PATCH request

[yutotakano]

Please describe what you are trying to achieve

Thank you for making Django-Ninja! I love the developer experience I'm getting out of it, and I find it very accessible and even fun to slowly convert parts of a large Django application to Ninja.

Currently, I'm stuck on the following and would like some help.

I'm trying to accept a partial model as multipart/form-data in a PUT/PATCH request. I'm aware of the middleware workarounds necessary #417 (comment) and I've already added that to my code.

I thought I could combine Form and PatchDict. But this results in a validation error: "data: Field required.". I tried switching the order around PatchDict[Form[DataCreationSchema]] but that didn't work either.

class DataSchema(Schema):
    id: int
    title: str
    description: Optional[str] = None
    year: int

class DataCreationSchema(Schema):
    title: str
    description: Optional[str] = None
    year: int

# ...there are other @router.get() requests and @router.post() for retrieval/creation

@router.put("/{id}/", response=DataSchema)
def update_entry(
    request,
    id: int,
    data: Form[PatchDict[DataCreationSchema]],  # <--- this doesn't work
):
    pass

Is this something that could be implemented/fixed? If it's too complex, please let me know and I'll weigh my options to convert my whole codebase to use application/json instead.