Django rest框架：在一个post请求中插入多个对象

Question

我将 DRF 用于我的 API 后端。我需要在一个帖子请求中插入多个对象。我看了很多教程，还有How do I create multiple model instances with Django Rest Framework?，但没有成功。我正在使用 ModelSerializer，但是当使用 ma​​ny=True 时，ListSerializer 会出现问题。

views.py

class SaleUserViewSet(ModelViewSet):
    queryset = SaleUser.objects.all()
    serializer_class = SaleUserSerializer(many=True)

serializers.py

class SaleUserSerializer(serializers.ModelSerializer):

    class Meta:
        model = SaleUser
        fields = ('id', 'comment', 'creation_date', 'modification_date', 'last_user', 'user', 'sale', 'user_sale_type')

错误信息

AttributeError at /api/sale_user/ type object 'Meta' has no attribute 'model'

请指教。

Answer 1

将序列化程序回滚到您的默认值

class SaleUserSerializer(serializers.ModelSerializer):

    class Meta:
        model = SaleUser
        fields = (
            'id',
            'comment',
            'creation_date',
            'modification_date',
            'last_user',
            'user',
            'sale',
            'user_sale_type'
        )

并覆盖它的视图：

from rest_framework.response import Response    

class SaleUserViewSet(ModelViewSet):
    queryset = SaleUser.objects.all()
    serializer_class = SaleUserSerializer

    def create(self, request, *args, **kwargs):
        data = request.data.get('items', request.data)
        many = isinstance(data, list)
        print (data, many)
        serializer = self.get_serializer(data=data, many=many)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        headers = self.get_success_headers(serializer.data)
        return Response(
                serializer.data,
                status=status.HTTP_201_CREATED,
                headers=headers
        )