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.py

from django.db import models

from django.contrib.auth.models import User

from django.db.models.signals import post_save

from django.dispatch import receiver

class 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.py

from django.http import HttpResponse 

from django.shortcuts import render,redirect

from django.contrib.auth import authenticate,login

from django.views import generic

from django.views.generic import View

from .forms import UserForm,ProfileForm

class 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)