AttributeError: 'IsInvited' object has no attribute 'request'

Question

我有一个像这样的模型视图集：

class MeetingViewSet(viewsets.ModelViewSet):

queryset = Meeting.objects.all()

serializer_class = MeetingSerializer
permission_classes =[IsAuthenticated & IsInvited | IsOwner]

和权限：

class IsInvited(BasePermission):
message = 'you must have been invited to see this meeting'

def has_object_permission(self, object, request, view):
  
    if self.request.method == 'GET' and object.is_invited(self.request.user):
        return True
        
    return False

class IsOwner(BasePermission):


def has_permission(self, request, view):
    return request.user and request.user.is_authenticated

def has_object_permission(self, object, request, view):
    
    if self.request.user == object.host:
        return True
    
    return False

但我收到了这个错误：

    Internal Server Error: /api/meetings/1/
Traceback (most recent call last):
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/mixins.py", line 54, in retrieve
    instance = self.get_object()
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/generics.py", line 99, in get_object
    self.check_object_permissions(self.request, obj)
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/views.py", line 345, in check_object_permissions
    if not permission.has_object_permission(request, self, obj):
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/permissions.py", line 81, in has_object_permission
    self.op1.has_object_permission(request, view, obj) or
  File "/home/admin1/envs/myvenv/lib/python3.8/site-packages/rest_framework/permissions.py", line 64, in has_object_permission
    self.op2.has_object_permission(request, view, obj)
  File "/home/admin1/mizbanproject/mizban_events/meeting/api/permissions.py", line 14, in has_object_permission
    return request.method == 'GET' and object.is_invited(request.user)
AttributeError: 'MeetingViewSet' object has no attribute 'method'

IsOwner 完美运行，我只在 IsInvited 中遇到这个错误，我很困惑，不知道如何解决这个错误。

Answer 1

has_object_permission方法不能使用self.request获取请求，因为BasePermission不包含request：请求作为参数传递，所以你可以实现这个 wsith:

def has_object_permission(self<b>, request, view, object</b>):
    return <strong>request</strong>.method == 'GET' and object.is_invited(<strong>request</strong>.user)
    #         ↑             no self.request                 ↑

参数的顺序也不一样：分别是self、object、view和rquest。

您的权限可能如下所示：

class IsInvited(BasePermission):
    message = 'you must have been invited to see this meeting'
    
    def has_object_permission(self<strong>, request, view, object</strong>):
        if return <strong>request</strong>.method == 'GET' and object.is_invited(request.user)


class IsOwner(BasePermission):
    def has_permission(self<strong>, request, view</strong>):
        return request.user and request.user.is_authenticated

    def has_object_permission(self<strong>, request, view, object</strong>):
        return <strong>request.</strong>user == object.host

AttributeError: 'IsInvited' object has no attribute 'request'

AttributeError: 'IsInvited' object has no attribute 'request'

django

django-rest-framework

django-permissions