Django rest framework 组基于个人视图的权限

Question

我正在使用 DRF 编写 API。我想为我的模型视图集中的每个视图提供不同的权限。我有两个组（客户和员工）。我在 permissions.py.

中将它们过滤为 Isstaff 和 Iscustomer

class Iscustomer(permissions.BasePermission):
    def has_permission(self, request, view):
        if request.user and request.user.groups.filter(name='customers'):
            return True
        return False


class Isstaff(permissions.BasePermission):
    def has_permission(self, request, view):
        if request.user and request.user.groups.filter(name='staff'):
            return True
        return False

我正在尝试使用 get_permissions 方法进行覆盖。当我在 self.permission_classes 中放置一个组时，它工作正常。

class cityviewset(viewsets.ModelViewSet):
    queryset = city.objects.all()
    serializer_class = citySerializer

    def get_permissions(self):    
        if self.request.method == 'POST' or self.request.method == 'DELETE':
            self.permission_classes = [Isstaff]
        return super(cityviewset, self).get_permissions()

但是，当我尝试将多个组放入 self.permission_classes 时，它失败了。

def get_permissions(self):
    if self.request.method == 'POST' or self.request.method == 'DELETE':
        self.permission_classes = [Isstaff,Iscustomer,]
    return super(cityviewset, self).get_permissions()

Answer 1

问题在于您在视图中添加了多个 permission_classes。检查你的 permissions 的方法是 check_permissions()。如果您查看 DRF 代码，

def check_permissions(self, request):
    """
    Check if the request should be permitted.
    Raises an appropriate exception if the request is not permitted.
    """
    for permission in self.get_permissions():
        if not permission.has_permission(request, self):
            self.permission_denied(
                request, message=getattr(permission, 'message', None)
            )

当您提供多个 permission_classes 时，用户必须同时满足这两个权限。因此，登录用户必须同时是 Staff 和 Customer。我认为这就是您的观点失败的原因。

Django rest framework 组基于个人视图的权限

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