ValueError：字段“id”需要一个数字但得到“10.48.38.28”

Question

我尝试使用 django 使用 Rest 框架搜索 sqlite 中的特定参数，但出现以下错误：

return int(value)
ValueError: invalid literal for int() with base 10: '10.48.38.28'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):...
ValueError: Field 'id' expected a number but got '10.48.38.28'.
[27/Sep/2022 13:23:59] "GET /sipinterface/?ipHost=10.48.38.28/ HTTP/1.1" 500 155723

楷模

class sipInterface(models.Model):
    siRealmId=models.CharField(max_length=75)
    siIpAddress=models.CharField(max_length=75)
    siPort=models.IntegerField()
    siTransportProtocol=models.CharField(max_length=75,null=True)
    siAllowAnonymus=models.CharField(max_length=75,null=True)
    ipHost = models.ForeignKey(host, on_delete=models.CASCADE)
    created=models.DateTimeField(auto_now_add=True)
    updated=models.DateTimeField(auto_now_add=True)

    class Meta: #nombre sing y plural de musica
        verbose_name="sipInterface"
        verbose_name="sipInterface"

    def __str__(self):
        return f"{self.siRealmId},{self.siIpAddress},{self.siPort},{self.siTransportProtocol},{self.siAllowAnonymus},{self.ipHost}"

序列化程序文件是下一个：序列化程序：

from rest_framework import serializers
from .models import sipInterface


class sipInterfaceSerializer(serializers.ModelSerializer):
    class Meta:
        model=sipInterface
        fields=['siRealmId','siIpAddress','siPort','siTransportProtocol','siAllowAnonymus','ipHost']

视图的文件是下一个：VIEW

class sipInterfaceList(generics.ListAPIView):

    serializer_class=sipInterfaceSerializer

    def get_queryset(self):
        queryset = sipInterface.objects.all()
        ipHost = str(re.sub(r'/.*',"",self.request.query_params.get('ipHost', None)))
        if ipHost is not None:
            queryset = sipInterface.objects.filter()
            queryset = queryset.filter(ipHost=ipHost)  #<--- THE ERROR!

        else:
            queryset = []
        return queryset

class sipInterfaceDetail(generics.RetrieveAPIView):
    queryset=sipInterface.objects.all()
    serializer_class=sipInterfaceSerializer

    def get_queryset(self):
        queryset = sipInterface.objects.all()
        ipHost = str(re.sub(r'/.*',"",self.request.query_params.get('ipHost', None)))
        if ipHost is not None:
            queryset = sipInterface.objects.filter()
            queryset = queryset.filter(ipHost=ipHost)

        else:
            queryset = []
        return queryset

我用#<--- THE ERROR！ 谢谢你的帮助

Answer 1

您有字段ipHost作为ForeignKey ：

ipHost = models.ForeignKey(host, on_delete=models.CASCADE)

因此，如果您想按它进行过滤，则必须传递其pk （在您的情况下为id ）或查找它的字段。 假设您的host model 有一个字段ip ，那么您的过滤器应如下所示：

queryset = queryset.filter(ipHost__ip=ipHost)