似乎你需要用于POST和PUT方法的不同序列化器。在用于PUT的序列化器方法中，你仅可以除去用户名字段（或将用户名字段设置为只读）。
class UserViewSet(viewsets.ModelViewSet): """ API endpoint that allows users to be viewed or edited. """ serializer_class = UserSerializer model = User def get_serializer_class(self): serializer_class = self.serializer_class if self.request.method == 'PUT': serializer_class = SerializerWithoutUsernameField return serializer_class def get_permissions(self): if self.request.method == 'DELETE': return [IsAdminUser()] elif self.request.method == 'POST': return [AllowAny()] else: return [IsStaffOrTargetUser()]
