Django - get_queryset() 缺少 1 个必需的位置参数：“请求”

Question

我试图使用 REST 框架制作 API 以将文件上传到服务器，我的代码如下。

如果您有任何其他简单的方法来做同样的事情，请发布您的代码。

模型.py

from django.db import models

# Create your models here.

class FileUploader(models.Model):
    file = models.FileField()
    name = models.CharField(max_length=100) #name is filename without extension
    version = models.IntegerField(default=0)
    upload_date = models.DateTimeField(auto_now=True, db_index=True)
    owner = models.ForeignKey('auth.User', related_name='uploaded_files')
    size = models.IntegerField(default=0)

    def __str__(self):
        return self.name

序列化程序.py

class FileUploaderSerializer(serializers.ModelSerializer):
    class Meta:
        model=FileUploader
        fields='__all__'
        read_only_fields = '__all__'
    def validate(self, validated_data):
        validated_data['owner'] = self.context['request'].user
        validated_data['name'] = os.path.splitext(validated_data['file'].name)[0]
        validated_data['size'] = validated_data['file'].size
        return validated_data
    def create(self,validated_data):
        return FileUploader.objects.create(**validated_data)

视图.py

class FileUploaderViewSet(viewsets.ModelViewSet):
    serializer_class = FileUploaderSerializer
    parser_classes=(MultiPartParser,FormParser)
    def get_queryset(self,request, *args, **kwargs):
        qs = super(FileUploaderViewSet, self).get_queryset(self,request, *args, **kwargs)
        qs = qs.filter(owner=self.request.user)
        return qs

网址.py

from django.conf.urls import url
from django.conf.urls import url,include
from django.contrib import admin
from rest_framework import routers
from rest_framework.authtoken.views import obtain_auth_token
from rest_framework.urlpatterns import format_suffix_patterns
from webapp import views
from webapp.views import(
    UserCreateAPIView,
    UserLoginAPIView,
    FileUploaderViewSet,
    )

router = routers.DefaultRouter()
router.register(r'upload', views.FileUploaderViewSet,base_name='file-view')

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^', include(router.urls)),
    #url(r'^upload/$',FileUploaderViewSet.as_view()),

]

我的要求是我需要将文件上传到服务器并显示上传文件的详细信息。

这是我得到的错误！

环境：

请求方式：GET 请求地址：http : //127.0.0.1 : 8000/upload/

Django 版本：1.11.7 Python 版本：3.6.3 已安装的应用程序：['django.contrib.admin'、'django.contrib.auth'、'django.contrib.contenttypes'、'django.contrib.sessions'、'django .contrib.messages', 'django.contrib.staticfiles', 'rest_framework', 'webapp'] 安装的中间件：['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django .middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middlesiddleFrameOptions ']

追溯：

文件“F:\proj\env\lib\site-packages\django\core\handlers\exception.py”在内部 41. response = get_response(request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 187. response = self.process_exception_by_middleware(e, request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 185. response =wrapped_callback(request, *callback_args, **callback_kwargs)

文件“F:\proj\env\lib\site-packages\django\views\decorators\csrf.py”在wrapped_view 58.return view_func(*args, **kwargs)

视图90中的文件“F:\proj\env\lib\site-packages\rest_framework\viewsets.py”。return self.dispatch(request, *args, **kwargs)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 489. response = self.handle_exception(exc)

文件“F:\proj\env\lib\site-packages\rest_framework\views.py”在handle_exception 449. self.raise_uncaught_exception(exc)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 486. response = handler(request, *args, **kwargs)

列表 40 中的文件“F:\proj\env\lib\site-packages\rest_framework\mixins.py”。 queryset = self.filter_queryset(self.get_queryset())

异常类型：TypeError at /upload/ 异常值：get_queryset() 缺少 1 个必需的位置参数：“请求”

更新了views.py文件如下

from django.shortcuts import render
from django.db.models import Q
from django.http import HttpResponse
from django.shortcuts import get_object_or_404
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework.parsers import MultiPartParser, FormParser

from rest_framework import viewsets
from rest_framework.status import HTTP_200_OK,HTTP_400_BAD_REQUEST
from .models import employees
from .serializers import (
    employeesSerializer,
    FileUploaderSerializer,
    )
from django.contrib.auth import get_user_model
from rest_framework.generics import (
    CreateAPIView,
    DestroyAPIView,
    ListAPIView,
    RetrieveAPIView,
    RetrieveUpdateAPIView,
    )

from rest_framework.permissions import(
    AllowAny,
    IsAuthenticated,
    IsAdminUser,
    IsAuthenticatedOrReadOnly,
    )

class employeeList(APIView):
    def get(self,request):
        employees1=employees.objects.all()
        serializer=employeesSerializer(employees1,many=True)
        return Response(serializer.data)


    def post(self):
        pass

User=get_user_model()

from .serializers import(
    UserCreateSerializer,
    UserLoginSerializer,
    )

class UserCreateAPIView(CreateAPIView):
    serializer_class=UserCreateSerializer
    queryset=User.objects.all()


class UserLoginAPIView(APIView):
    permission_classes=[AllowAny]
    serializer_class=UserLoginSerializer
    def post(self,request,*args,**kwargs):
        data=request.data
        serializer=UserLoginSerializer(data=data)
        if serializer.is_valid(raise_exception=True):
            new_data=serializer.data
            return Response(new_data,status=HTTP_200_OK)
        return Response(serializer.errors,status=HTTP_400_BAD_REQUEST)

class FileUploaderViewSet(viewsets.ModelViewSet):
    serializer_class = FileUploaderSerializer
    parser_classes=(MultiPartParser,FormParser)

 # overriding default query set
    #queryset = LayerFile.objects.all()

    def get_queryset(self, *args, **kwargs):
        qs = super(FileUploaderViewSet, self).get_queryset(self, *args, **kwargs)
        qs = qs.filter(owner=self.request.user)
        return qs

追溯：

环境：

请求方式：GET 请求地址：http : //127.0.0.1 : 8000/upload/

Django 版本：1.11.7 Python 版本：3.6.3 已安装的应用程序：['django.contrib.admin'、'django.contrib.auth'、'django.contrib.contenttypes'、'django.contrib.sessions'、'django .contrib.messages', 'django.contrib.staticfiles', 'rest_framework', 'webapp'] 安装的中间件：['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django .middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middlesiddleFrameOptions ']

追溯：

文件“F:\proj\env\lib\site-packages\django\core\handlers\exception.py”在内部 41. response = get_response(request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 187. response = self.process_exception_by_middleware(e, request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 185. response =wrapped_callback(request, *callback_args, **callback_kwargs)

文件“F:\proj\env\lib\site-packages\django\views\decorators\csrf.py”在wrapped_view 58.return view_func(*args, **kwargs)

视图90中的文件“F:\proj\env\lib\site-packages\rest_framework\viewsets.py”。return self.dispatch(request, *args, **kwargs)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 489. response = self.handle_exception(exc)

文件“F:\proj\env\lib\site-packages\rest_framework\views.py”在handle_exception 449. self.raise_uncaught_exception(exc)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 486. response = handler(request, *args, **kwargs)

列表 40 中的文件“F:\proj\env\lib\site-packages\rest_framework\mixins.py”。 queryset = self.filter_queryset(self.get_queryset())

文件“F:\proj\env\myproject\webapp\views.py”在 get_queryset 74. qs = super(FileUploaderViewSet, self).get_queryset(self, *args, **kwargs)

异常类型：TypeError at /upload/ 异常值：get_queryset() 需要 1 个位置参数，但给出了 2 个

---

更改获取查询集后的新回溯

class FileUploaderViewSet(viewsets.ModelViewSet):
    serializer_class = FileUploaderSerializer
    parser_classes=(MultiPartParser,FormParser)

 # overriding default query set

    def get_queryset(self):
        qs = super(FileUploaderViewSet, self).get_queryset()
        qs = qs.filter(owner=self.request.user)
        return qs

环境：

请求方式：GET 请求地址：http : //127.0.0.1 : 8000/upload/

Django 版本：1.11.7 Python 版本：3.6.3 已安装的应用程序：['django.contrib.admin'、'django.contrib.auth'、'django.contrib.contenttypes'、'django.contrib.sessions'、'django .contrib.messages', 'django.contrib.staticfiles', 'rest_framework', 'webapp'] 安装的中间件：['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django .middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middlesiddleFrameOptions ']

追溯：

文件“F:\proj\env\lib\site-packages\django\core\handlers\exception.py”在内部 41. response = get_response(request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 187. response = self.process_exception_by_middleware(e, request)

文件“F:\proj\env\lib\site-packages\django\core\handlers\base.py” in _get_response 185. response =wrapped_callback(request, *callback_args, **callback_kwargs)

文件“F:\proj\env\lib\site-packages\django\views\decorators\csrf.py”在wrapped_view 58.return view_func(*args, **kwargs)

视图90中的文件“F:\proj\env\lib\site-packages\rest_framework\viewsets.py”。return self.dispatch(request, *args, **kwargs)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 489. response = self.handle_exception(exc)

文件“F:\proj\env\lib\site-packages\rest_framework\views.py”在handle_exception 449. self.raise_uncaught_exception(exc)

文件 "F:\proj\env\lib\site-packages\rest_framework\views.py" in dispatch 486. response = handler(request, *args, **kwargs)

列表 40 中的文件“F:\proj\env\lib\site-packages\rest_framework\mixins.py”。 queryset = self.filter_queryset(self.get_queryset())

get_queryset 74 中的文件“F:\proj\env\myproject\webapp\views.py”。 qs = super(FileUploaderViewSet, self).get_queryset()

文件“F:\proj\env\lib\site-packages\rest_framework\generics.py” in get_queryset 68.% self. 类。姓名

异常类型：AssertionError at /upload/ 异常值：'FileUploaderViewSet' 应该包含一个queryset属性，或者覆盖该get_queryset()方法。

Answer 1

正如 Sayse 所说，它只需要self. 但你不必传递self到get_queryset(). self只是一个实例，super它本身就是自实例。

所以只需将以下行更改为

super(FileUploaderViewSet, self).get_queryset(self, *args, **kwargs)

到

super(FileUploaderViewSet, self).get_queryset()

看看这里的代码片段

更新：

你确定吗，你的get_queryset在同一个班吗？

你尝试过只写queryset = Model.objects.all()吗？

我不认为model = ModelName你的看法。

view class应该有以下字段。

def get_queryset(self):
    return queryset

serializer_class = SerializerClass
model = ModelName