Django rest框架：在一个发布请求中插入多个对象 [英] Django rest framework: Insert multiple objects in one post request

问题描述

我将DRF用于我的API后端。我需要在一个发布请求中插入多个对象。我看到了很多教程，以及如何做我使用Django Rest Framework创建了多个模型实例？，但未成功。我正在使用ModelSerializer，但是在使用 many = True 时，ListSerializer出现了问题。

I am using DRF for my API backend. I need to insert multiple objects into one post request. I saw so many tutorials, as well How do I create multiple model instances with Django Rest Framework?, but not success. I am using ModelSerializer, but when using many=True then have problem with ListSerializer.

views.py

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

serlializers.py

class SaleUserSerializer(serializers.ModelSerializer):

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

错误消息

/ api / sale_user /类型的AttributeError对象'Meta'没有属性'model'

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

请告知。

推荐答案

将序列化器还原为默认值

rollback serializer to your default

class SaleUserSerializer(serializers.ModelSerializer):

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

并覆盖其视图：

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") if 'items' in request.data else 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)

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