序列化程序中的数据始终为空

Question

I have following serializer:

class AdminSerializer(serializers.Serializer):
    def validate(self, data):
        user = data.get("user_pk")
        total_licenses = data.get("total_licenses")
        #here i do some validation with the vars

But my data is always empty. This is part of my view

serializer_class = self.get_serializer_class()
serializer = serializer_class(
    data=self.request.data,
)
serializer.is_valid(raise_exception=True)

This is my unit test request:

response = self.client.patch(
    url,
    data={"user_pk": self.user.pk, "total_licenses": 3},
)

Why is my 'data' always empty?

Answer 1

You need to call serializer.save() before you can access .data attribute on a serializer. Otherwise, you can access .validated_data attribute on your serializer

Answer 2

You have to explicitly specify fields in your serializer:

class AdminSerializer(serializers.Serializer):
  user_pk = serializers.IntegerField()
  total_licenses = serializers.IntegerField()


  def validate(self, data):
     ...