[BUG] static resolver fields called twice

[dusty-phillips]

Describe the bug

Roughly following https://django-ninja.dev/guides/response/django-pydantic/ I am seeing static resolvers called twice, once with the Django model and once with the Pydantic Schema. Consider this schema:

class UserSchema(ModelSchema):
    both: str

    class Meta:
        model = User
        fields = ["username", "email"]

    @staticmethod
    def resolve_both(obj):
        print("called with", obj, obj.__class__)
        return f"{obj.username} <{obj.email}>"


@api.get("/hello", response=UserSchema)
def hello(request):
    user = User.objects.first()
    return UserSchema.from_orm(user)

The console output is:

called with me <class 'django.contrib.auth.models.User'>
called with both='me <me@me.com>' username='me' email='me@me.com' <class 'myproject.api.UserSchema'>

My guess is the function gets called by Django-ninja and then gets called again by Pydantic, because the name is overloaded. This doesn't seem to be expected/intended. The only way I can see to fix it in my code is to scatter isinstance calls in all my resolvers.

Versions (please complete the following information):

• Python version: 3.12
• Django version: tried with 5.1.3 and 4.2.15
• Django-Ninja version: 1.3.0
• Pydantic version: tried with 2.10.1 and 2.8.2