Django-ValueError [无法创建用户，因为数据没有验证]

Question

我使用了基于本教程的扩展用户模型。当我提交注册表时，会发生此错误。我在代码中使用 is_active() 和 is_active 时都会显示此错误。如何解决此错误？这是我的代码：模型.pyfrom django.db import modelsfrom django.contrib.auth.models import Userfrom django.db.models.signals import post_savefrom django.dispatch import receiverclass Profile(models.Model):    user = models.OneToOneField(User,on_delete=models.CASCADE)    full_name = models.CharField(max_length=256, blank=False)    codeforces_id = models.CharField(max_length=256, blank=False)    Uva_Id = models.CharField(max_length=256, blank=False)    #receiver(post_save, sender=User)    def create_user_profile(sender, instance, created, **kwargs):        if created:            Profile.objects.create(user=instance)    #receiver(post_save, sender=User)    def save_user_profile(sender, instance, **kwargs):        instance.profile.save()视图.pyfrom django.http import HttpResponse from django.shortcuts import render,redirectfrom django.contrib.auth import authenticate,loginfrom django.views import genericfrom django.views.generic import Viewfrom .forms import UserForm,ProfileFormclass UserFormView(View):    user_form_class = UserForm    profile_form_class= ProfileForm    #display a blank form    def get(self , request):         user_form = self.user_form_class(None)         profile_form = self.profile_form_class(None)         return render(request, 'website/registration_form.html',{            'user_form':user_form,            'profile_form':profile_form            })    #process form data    def post(self, request):        user_form = self.user_form_class(request.POST)        profile_form = self.profile_form_class(request.POST)        user= user_form.save(commit=  False)        if user_form.is_valid() and profile_form.is_valid():            password= user_form.cleaned_data['password']            username = user_form.cleaned_data['username']            user.set_password(password)