Idea to create a mxin that behave like ModelSerializer but with Marshmallow Schema

schema_mixin.py

class ModelSchemaMixin:
    model = None

    def create(self, validated_data):
        if not model:
            raise serializers.ValidationError('There is no model defined.')
        return self.model.objects.create(**validated_data)

    def update(self, instance, validated_data):
        for key, value in validated_data.items():
            setattr(instance, key, value)
        instance.save()
        return instance