Question

请帮助理解。我有一个REST API的django应用程序。一切正常，但我想通过client_id添加过滤器，在这里我收到了问题。

有错误消息

invalid literal for int() with base 10: 'B123456'

确定这是我的代码

api.py

   class DatabaseByClientList(RetrieveUpdateDestroyAPIView):
        serializer_class = DatabaseSerializer

        def get_queryset(self):
            client_id = self.kwargs['client_id']
            return Database.objects.filter(client_id=client_id)

models.py

class Database(models.Model):
    def __unicode__(self):
        return unicode(self.id)

    class Meta:
        ordering = ['db_name']

    client_id = models.ForeignKey(ClientInfo)
    db_name = models.CharField(max_length=30, blank=True)
    db_host = models.CharField(max_length=30, blank=True)
    db_user = models.CharField(max_length=30, blank=True)
    db_pass = models.CharField(max_length=30, blank=True)
    db_type = models.CharField(max_length=30, blank=True)

serializer.py

class DatabaseSerializer(serializers.ModelSerializer):

    client_id = serializers.SlugRelatedField(queryset=ClientInfo.objects.all(),
                                           slug_field='access_id')

    class Meta:
        model = Database
        fields = ('id', 'client_id', 'db_name', 'db_host', 'db_user', 'db_pass', 'db_type')

怎么了？我在文档中做了一切。谢谢， PS我试过

return Database.objects.filter(client_id=client_id)

但它也没有帮助

添加了ClientInfo类

class ClientInfo(models.Model):

    def __str__(self):
        return self.access_id

    class Meta:
        ordering = ['id']

    access_id = models.CharField(max_length=15, unique=True, blank=True)
    username = models.CharField(max_length=15, unique=True, blank=True)
    password = models.CharField(max_length=15, unique=True, blank=True)
    name = models.CharField(max_length=15, unique=True, blank=True)

Answer 1

尝试以这种方式覆盖get_queryset方法。

class DatabaseByClientList(...):
    model = Database
    serializer_class = DatabaseSerializer

    def get_queryset(self):
        qs = super(DatabaseByClientList, self).get_queryset()
        qs.filter(client_id=self.kwargs['client_id'])
        return qs

在Django上过滤器的问题

1 个答案: