Question

我想创建一个条件，在该条件下，我将从Google Place API中获取数据。在我的模型中，place_id是unique字段。我创建了需要多个数据的api-有点像这样-[{},{},{}]。

当我使用2个相同的place_id输入数据时，会出现错误-"masjid with this place id already exists."。

代替了place_id的唯一错误。我想检查place_id是否已经存在，然后不要给出错误，只需跳过该错误并输入具有唯一place_id的数据即可。

在这里，我将举一个示例，说明我已使用json发送数据。

[
    {
        "name": "Jama masjid",
        "address": "XYZ",
        "latitude": 25454.25,
        "longitude": 1541.4,
        "place_id": "place_id" <---- This place_id already exist in database
    },
    {
        "name": "Noor masjid",
        "address": "kondhwa",
        "latitude": 25454.25,
        "longitude": 1541.4,
        "place_id": "place_id1"
    }
]

因此在响应中会产生此错误-

[
    {
        "place_id": [
            "masjid with this place id already exists."
        ]
    },
    {}
]

注意-我正在发送多个数据-many=True

Models.py

class Masjid(models.Model):
    name = models.CharField(max_length=255, null=True, blank=True)
    address = models.CharField(max_length=255, null=True, blank=True)
    place_id = models.CharField(max_length=255, null=True, blank=True, unique=True)
    latitude = models.FloatField(blank=True, null=True)
    longitude = models.FloatField(blank=True, null=True)

Views.py

class MasjidAddGoogleAPIView(generics.CreateAPIView):
    queryset = Masjid.objects.all()
    serializer_class = serializers.MasjidAddGoogleSerialzer
    permission_classes = [IsAuthenticated]

    def list(self, request):
        queryset = self.get_queryset()
        serializer = serializers.MasjidAddGoogleSerialzer(queryset, many=True)
        return Response(serializer.data)

    def post(self, request, format=None):
        data = request.data
        print(data)
        if isinstance(data, list):
            serializer = self.get_serializer(data=request.data, many=True)
        else:
            serializer = self.get_serializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

serilizers.py

class MasjidAddGoogleSerialzer(serializers.ModelSerializer):
    class Meta:
        model = Masjid
        fields = [
            'name',
            'address',
            'latitude',
            'longitude',
            'place_id'
        ]

Answer 1

我找到了解决方案。我已经遍历了已发送的列表。然后，我将字段place_id与数据库匹配，并创建了新的list。根据该新的list数据已输入数据库。

创建新列表-

data_final = [i for i in data if not (Masjid.objects.filter(place_id=i['place_id']).exists() == True)]

Views.py

class MasjidAddGoogleAPIView(generics.CreateAPIView):
    queryset = Masjid.objects.all()
    serializer_class = serializers.MasjidAddGoogleSerialzer
    permission_classes = [IsAuthenticated]

    def list(self, request):
        queryset = self.get_queryset()
        serializer = serializers.MasjidAddGoogleSerialzer(queryset, many=True)
        return Response(serializer.data)

    def post(self, request, format=None):
        data = request.data

        if data:   

            if isinstance(data, list):   

                data_final = [i for i in data if not (Masjid.objects.filter(place_id=i['place_id']).exists() == True)]        

                if data_final:
                    serializer = self.get_serializer(data=data_final, many=True)

                    if serializer.is_valid():
                        serializer.save()
                        return Response(serializer.data, status=status.HTTP_201_CREATED)

            else:
                serializer = self.get_serializer(data=request.data)

                if serializer.is_valid():
                        serializer.save()
                        return Response(serializer.data, status=status.HTTP_201_CREATED)

        return Response(status=status.HTTP_204_NO_CONTENT)

在Django API中检查唯一性，跳过并相应输入数据

1 个答案: