如何使用Djangorestframework中的UpdateAPIView更新模型中的单个字段?

时间:2019-08-01 10:10:08

标签: django python-3.x django-rest-framework django-serializer django-generic-views

我正在学习通用视图并创建一些Api。如何更新Model:“ Contacts”中的“ mobile”字段?

我想从url(mobile / update / user_id)获取用户ID。但是在创建查询集时,它不起作用。我想做这里提到的事情(#queryset = Contacts.objects.filter(id = Usertab.objects.filter(id = self.kwargs ['id'])。first()。contact.id))

'''python

class UpdateMobileAPIView(generics.UpdateAPIView):
queryset = Contacts.objects.filter(pk=Usertab.objects.all())

serializer_class = ContactsSerializer
lookup_field = 'pk'

def update(self,instance,request):
    instance = self.get_object()
    serializer= self.get_serializer(instance,data=request.data,partial=True)
    if serializer.is_valid():
        serializer.save()
        return Response({"message":"mobile number updated successfully"})

    else:
        return Response({"message":"failed"})

''' 这些是模型

class Contacts(models.Model):

mobile = models.IntegerField(null=False)
Landline = models.IntegerField(null=False)
whats_app = models.IntegerField(null=False)

类Usertab(models.Model):

username = models.CharField(max_length=255,null=False,blank=False)
address = models.CharField(max_length=255,null=False,blank=False)
pin_code = models.CharField(max_length=255,null=False,blank=False)
contact = models.ForeignKey(Contacts,related_name="contacts_user")

类电子邮件(models.Model):

user = models.ForeignKey(Usertab,related_name="user_email")
email = models.CharField(max_length=255,null=False,blank=False)
is_verified = models.BooleanField(default=False)

'''

'''这是序列化器

class ContactsSerializer(ModelSerializer):

class Meta:
    model = Contacts
    fields = '__all__'

def update(self, instance, validated_data):
    instance.mobile = validated_data.get('mobile', instance.mobile)
    instance.save()
    return instance

'''

TypeError:update()得到了意外的关键字参数'pk'

1 个答案:

答案 0 :(得分:0)

我认为错误在于您的queryset值。如果目标是 联系人模型,只需将查询集作为联系人模型中的所有项目即可。这样,查找字段可用于过滤整个数据集并编辑适当的条目。

class UpdateMobileAPIView(generics.UpdateAPIView):
    queryset = Contacts.objects.all()
    serializer_class = ContactsSerializer
    lookup_field = 'pk'

    def update(self, request, *args, **kwargs):
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=True)

        if serializer.is_valid():
            serializer.save()
            return Response({"message": "mobile number updated successfully"})

        else:
            return Response({"message": "failed", "details": serializer.errors})