Question

我正在使用django restapi框架并尝试做crud，我完成了insert，update，select操作，但是无法删除记录。如果有人能告诉我应该朝哪个方向去解决这个问题，我对此一无所知，我真的很高兴。

urls.py 我尝试使用url版本和路径版本

   path('user/profile/add', views.AddProfile.as_view(), name='user_profile_add'),   
     # path('user/profile/delete/<int:id>', views.DeleteProfile.as_view(), name='user_profile_delete'), 
    url(r'^user/profile/(?P<pk>\d+)/delete/$', views.DeleteProfile.as_view(), name='user_profile_add'),

views.py

class DeleteProfile(APIView):
    permission_classes = (IsAuthenticated,)

     def get_object(self, pk):
        try:
            return UserProfile.objects.get(pk=pk)
        except UserProfile.DoesNotExist:
            raise Http404

    def delete(self, request, pk):
        userprofile = self.get_object_or_404(id=pk)
        userprofile.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

serializers.py

class UserProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserProfile
        fields = ('id', 'userid', 'accounttype')

models.py

from django.shortcuts import render, redirect, get_object_or_404, render_to_response 
from .models import UserProfile 
from rest_framework.permissions import IsAuthenticated 
from rest_framework.response import Response 
from rest_framework.views import APIView 
from rest_framework import serializers 
from rest_framework import status

class UserProfile(models.Model):
    id = models.AutoField(primary_key=True, verbose_name='PID')
    userid = models.BigIntegerField(verbose_name='UID')
    accounttype = models.CharField(max_length=20, verbose_name='AccType')
    list_display = ('id', 'accounttype', 'userid')

我将views.py更改为

class DeleteProfile(APIView):
    permission_classes = (IsAuthenticated,)

    def get_object(self, pk):
        try:
            return UserProfile.objects.get(pk=pk)
        except ObjectDoesNotExist:
            raise Http404

    def delete(self, request, pk, format=None):
        userprofile = self.get_object(pk)
        userprofile.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

并从终端获取此错误：

    response = handler(request, *args, **kwargs)
  File "D:\Only One Will Live - 3\dysapp\views.py", line 329, in delete
    userprofile = self.get_object(pk)

  File "D:\Only One Will Live - 3\dysapp\views.py", line 324, in get_object
    return UserPorfile.objects.get(pk=pk)
NameError: name 'UserPorfile' is not defined
[27/Jun/2019 11:28:06] "DELETE /user/profile/37/delete/ HTTP/1.1" 500 18477

当前错误：

    response = handler(request, *args, **kwargs)
  File "D:\Only One Will Live - 3\dysapp\views.py", line 329, in delete
    userprofile = self.get_object(pk)

  File "D:\Only One Will Live - 3\dysapp\views.py", line 324, in get_object
    return UserProfile.objects.get(pk=pk)
AttributeError: type object 'UserProfile' has no attribute 'objects'
[27/Jun/2019 11:42:16] "DELETE /user/profile/37/delete/ HTTP/1.1" 500 18525

Answer 1

from django.core.exceptions import ObjectDoesNotExist
from django.shortcuts import get_object_or_404
......

try:
  # try something
except ObjectDoesNotExist:
  # do something

#### Or use the following
get_object_or_404(UserProfile, pk=pk)

Answer 2

”“我认为您已经在视图文件中定义了一个类，名为UserProfile，因此将覆盖您导入的模型。将该视图称为其他视图。 “丹尼尔·罗斯曼

解决了。

django“类型对象'UserProfile'没有属性'DoesNotExist'”

2 个答案: