Как реализовать Update для AbstractUser в Django?

В моем приложении реализованы регистрация/вход с помощью наследования UserCreationForm. Как осуществить изменение пользователя, задействовав UserChangeForm?

models.py

from django.contrib.auth.models
import AbstractUser

# Create your models here.
class CustomUser(AbstractUser): pass
def __str__(self): return self.username

forms.py

from django.contrib.auth.forms
import UserCreationForm, UserChangeForm
from.models
import CustomUser

class CustomUserCreationForm(UserCreationForm): class Meta(UserCreationForm): model = CustomUser fields = ('first_name', 'last_name', 'username', 'email')

class CustomUserChangeForm(UserChangeForm): class Meta: model = CustomUser fields = ('first_name', 'last_name', 'username', 'email')

views.py

from django.shortcuts import render, redirect

# Create your views here. from django.urls import reverse_lazy from django.views.generic.edit import CreateView from django.views import View

from .forms import CustomUserCreationForm, CustomUserChangeForm from .models import CustomUser

class SingUpView(CreateView): form_class = CustomUserCreationForm success_url = reverse_lazy('login') template_name = 'signup.html'

#выдает ошибку
class CustomUserUpdateView(View):
def get(self, request, *args, **kwargs):
user_id = kwargs.get("id")
user = CustomUser.objects.get(id=user_id)
form = CustomUserChangeForm(instance=user)
return render(
request, "users/update.html", {"form": form, "user_id": user_id}
)

def post(self, request, *args, **kwargs):
user_id = kwargs.get("id")
user = CustomUser.objects.get(id=user_id)
form = CustomUserChangeForm(request.POST, instance=user)
if form.is_valid():
form.save()
return redirect("users_list")
return render(
request, "users/update.html", {"form": form, "user_id": user_id}
)

Пыталась реализовать update через наследование класса View с методами get/post, выдает ошибку

CustomUser matching query does not exist.