Question

即将面临以下问题：我将Cantonment（家庭）插入我的数据库，地址和住宿（沙发/床......）。一切正常（插入）但在正确插入所有内容之后，所创建对象（cantonment）的返回实例抛出错误：

尝试在序列化程序accomodations上获取字段CantonmentCreateSerializer的值时，

得到了AttributeError。序列化程序字段可能名称不正确，并且与Cantonment实例上的任何属性或键都不匹配。最初的例外文字是：＆＃39; Cantonment＆＃39;对象没有属性＆＃39;住宿＆＃39;

在此示例中使用的查询（使用查询）。

正如我所说插入工作，但返回实例是一个错误。添加 source =＆＃39; accomodation_set＆＃39; 可能会显示正确的输出，但我无法插入任何数据。

有没有办法可以使用不同的序列化程序来返回实例（已创建）。如果您需要更多信息（型号）告诉我：）

感谢您的帮助

class CantonmentCreateSerializer(serializers.ModelSerializer):
    address = AddressSerializer()
    accomodations = AccomodationSerializer(many=True)

    # other profile
    class Meta:
        model = Cantonment
        fields = ('id','user','name', 'description', 'type', 'stay_type', 'geom', 'address', 'accomodations')
        read_only_fields=('id', 'user',)

    def create(self, validated_data):
        with transaction.atomic():
            # Create Cantonment first and link it to the address and all accomodations

            ''' Query used
            {
                "stay_type": 1,
                "address": {
                    "raw_address": "1",
                    "street_number": "2",
                    "route": "3",
                    "city": "4",
                    "postal_code": "5",
                    "state": "6",
                    "state_code": "7",
                    "country": "8",
                    "country_code": "9"
                },
                "type": 1,
                "accomodations": [
                    {"accomodation_option": "2", "available_space": "3"},
                    {"accomodation_option": "4", "available_space": "4"}
                ],
                "description": "test",
                "geom": "POINT(1 2)",
                "name": "123"
            }
            '''

            accomodations_data = validated_data.pop('accomodations')
            address_data = validated_data.pop('address')

            cantonment = Cantonment.objects.create(user = validated_data.get('user'),
                name = validated_data.get('name'),
                description = validated_data.get('description'),
                type = validated_data.get('type'),
                stay_type = validated_data.get('stay_type'),
                geom = validated_data.get('geom'))


            address = Address.objects.create(cantonment = cantonment, **address_data)

            # Run through all accomodations submitted and create one accomodation respective
            for accomodation_data in accomodations_data:
               accomodation = Accomodation.objects.create(cantonment = cantonment, **accomodation_data)

        return cantonment

Answer 1

地址和住宿必须是只写的。因为Cantonment Model没有地址和住宿属性。

XIP file

返回实例后的Django KeyError（Serializer）

1 个答案: