1 class LazySerializer:
2 def __init__(self, cls_name, **kwargs):
3 self.cls_name = cls_name
4 self.kwargs = kwargs
5
6 class empty:
7 pass
8
9 def __call__(self, instance=None, data=empty, **kwargs) -> serializers.Serializer:
10 return type(self.cls_name, (serializers.Serializer,), self.kwargs)(instance=instance, data=data, **kwargs)
11
12
13 S = LazySerializer("PeopleSerializer", name=serializers.CharField(), age=serializers.IntegerField(min_value=1))
14 s = S(data={"name": "xiaoming", "age": 18})
15 s.is_valid()
16 print(s.data) # {'name': 'xiaoming', 'age': 18}
