Django-filters 不适用于 Viewset

Question

我一直在尝试使用 django-filters，但对象没有得到过滤。此外，该权限不适用于 partial_update 视图

我有一个视图集，它具有基本操作，例如 - list()、retrieve()、destroy()、partial_update() 和其他一些操作，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，所以我将不得不覆盖 get_queryset() 方法。但是，这似乎也不起作用。过滤器是否仅适用于 ModelViewSet 或 ListApiView？

视图集-

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

后置过滤器-

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')

任何帮助将不胜感激。

Answer 1

您已经覆盖了列表方法，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)

Answer 2

好的，所以终于找到了 DRF Docs. The issue was that in case of normal ViewSet you have to override the method filter_queryset() and return the appropriate queryset accordingly. Then use the queryset under filter_queryset as mentioned by Aman 的解决方案 -

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

下面是代码，供遇到问题的朋友参考 -

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

Django-filters 不适用于 Viewset

Django-filters does not work with the Viewset

python

django

django-filter

django-rest-framework

django-rest-viewsets