我得到这些错误在“AttributeError的：‘NoneType’对象有没有属性‘get_all_permissions’

Question

class TenantViewSet(viewsets.ModelViewSet): 
    """ 
    API endpoint that allows Tenant users to be viewed. 
    """ 
    model = TenantUser 
    serializer_class = TenantUserSerializer 

    def list(self, request, domain): 
     tenants = TenantUser.objects.all() 
     serializer = TenantUserSerializer(tenants) 
     return Response(serializer.data) 

    def retrieve(self, request, domain, pk=None): 
     current_tenant_user = get_current_tenant_user() 
     permissions = current_tenant_user.user.get_all_permissions() 
     if pk == 'me' or int(pk) == current_tenant_user.id: 
      tenant_user = current_tenant_user 
     else: 
      if not 'core.admin' in permissions: 
       return Response({"detail": "You don't have permission to perform this action."}, 
           status=status.HTTP_403_FORBIDDEN) 
      try: 
       tenant_user = TenantUser.objects.get(id=pk) 
      except(TenantUser.DoesNotExist, Exception, ValueError): 
       return Response(status=status.HTTP_404_NOT_FOUND) 
      permissions = tenant_user.user.get_all_permissions() 
     serializer = TenantUserSerializer(tenant_user) 
     serializer.data['is_apps_admin'] = 'core.apps' in permissions 
     serializer.data['is_admin'] = 'core.admin' in permissions 
     serializer.data['is_user'] = 'core.user' in permissions 
     serializer.data['is_subscribed'] = 'core.active' in permissions 
     serializer.data['is_sales_admin'] = 'core.sales' in permissions 
     serializer.data['is_marketing_admin'] = 'core.marketing' in permissions 
     return Response(serializer.data) 

Answer 1

我的猜测get_current_tenant_user函数不返回用户确保用户从该函数返回与return或yield声明。