[Python] How to parse api request to defined model?

I'm new with python, I'm trying to parse api request to a defined model, so how to fix below code?

class PersonSerializer(serializers.Serializer):
name = serializers.CharField()

class APIJustTest(APIView):
parser_classes = (JSONParser,)
@swagger_auto_schema(request_body=PersonSerializer)
def post(self, request, *args, **krgs):
serializer = PersonSerializer(data=request.data)
serializer.is_valid()

nameOK = serializer['name'].value #dictionary works but I prefer defined model
nameError = serializer.name #this is defined model but will cause server error

return JsonResponse({})

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