Question

我一直在尝试使用django-filters，但是对象没有被过滤。另外，该权限不适用于 partial_update 视图

我有一个Viewset，它具有一些基本动作，例如-list（），retrieve（），destroy（），partial_update（）和其他一些动作，并尝试对其应用过滤器。

经过一些研究，我发现由于我是通过过滤器创建查询集的，所以我将不得不覆盖 get_queryset（）方法。但是，这似乎也不起作用。过滤器仅适用于 ModelViewSet 或 ListApiView 吗？

ViewSet-

class PostViewSet(viewsets.ViewSet):
"""
The Endpoint to list, retrieve, create and delete Posts.

"""
filter_backends = (DjangoFilterBackend, )
# filterset_class = PostFilter
filter_fields = ('pet_age', 'pet_gender', 'breed')

def get_permissions(self):

    if self.action == 'partial_update' or self.action == 'update':
        permission_classes = [IsPostAuthor, ]

    elif self.action == 'create' or self.action == 'destroy':
        permission_classes = [IsAuthenticated, ]

    else:
        permission_classes = [AllowAny, ]

    return[permission() for permission in permission_classes]

def get_queryset(self):
    return Post.objects.active() # This is implemented via custom Manager

def list(self, request, *args, **kwargs):
    """
    Method for Post listing. It can be accessed by anyone.
    """

    serializer = PostListSerializer(self.get_queryset(), many=True, context={"request": request})

    return Response(serializer.data)
# REST CODE TRUNCATED

权限-

class IsPostAuthor(permissions.BasePermission):
"""
Object-level permission to only allow owners of an object to edit it.
"""

def has_object_permission(self, request, view, obj):
    if request.user.is_authenticated:
        if view.action in ['partial_update', 'update']:
            return obj.user.id == request.user.id
        return False

    return False

PostFilter-

class PostFilter(filters.FilterSet):

class Meta:
    model = Post
    fields = ('pet_age', 'pet_gender', 'breed', )

经理-

class PostManager(models.Manager):

def active(self):
    return self.filter(post_status='Active')

我们将不胜感激任何帮助。

Answer 1

好的，终于找到了DRF Docs的解决方案。问题在于，对于普通的ViewSet，您必须重写方法 filter_queryset（）并相应地返回相应的 queryset 。然后使用Aman所述的 filter_queryset 下的 queryset -

serializer = PostListSerializer(self.filter_queryset(self.get_queryset()), many=True, context={"request": request})

以下是仍面临问题的人员的参考代码-

filter_queryset-

def filter_queryset(self, queryset):
    filter_backends = (DjangoFilterBackend, )

    # Other condition for different filter backend goes here

    for backend in list(filter_backends):
        queryset = backend().filter_queryset(self.request, queryset, view=self)
    return queryset

Answer 2

您已经覆盖了list方法，因此无法调用filter_queryet方法。

def list(self, request, *args, **kwargs):
    """
     Method for Post listing. It can be accessed by anyone.
     """

    serializer = PostListSerializer(self.filter_queryset(self.get_queryset()), many=True, context= . 
     {"request": request})

    return Response(serializer.data)

Django过滤器不适用于Viewset

2 个答案: