How to fix this (UserCreationForm, AbstractUser)?

Question

Django

I registered on the site in this way:
1) Expanded the user model by adding a field for the phone:

class User(AbstractUser):
    phone = models.CharField(max_length=50)

2) Registered in settings.py 3) 4) 5) Customized the UserCreationForm form:
AUTH_USER_MODEL='myapp.User'
manage.py makemigrations
manage.py migrate

class CreateForm(UserCreationForm):
    error_messages = {
        'duplicate_username': "Пользователь с таким именем уже существует",
        'password_mismatch': "Введенные пароли не совпадают"
    }

    username = forms.RegexField(label="Имя пользователя:", max_length=30,
        regex=r'^[\[email protected]+-]+$', widget=forms.TextInput(attrs={'class': 'form-control'}))

    password1 = forms.CharField(label="Пароль:",
        widget=forms.PasswordInput(attrs={'class': 'form-control'}))

    password2 = forms.CharField(label="Повторите пароль:",
        widget=forms.PasswordInput(attrs={'class': 'form-control'}))

6) Wrote the controller:

def signup(request):
    if request.method == 'POST':
        form = CreateForm(request.POST)
        if form.is_valid():
             username = cleaned_data['username']
             password = cleaned_data['password1']
             User.objects.create_user(username=username, password=password)
        return redirect('/success/')
    elif request.method == 'GET':
        form = CreateForm()
        return render(request, 'core/signup.html', {'form': form})

As a result, it gives an error:

Exception Type: ProgrammingError at /signup/
Exception Value: relation "auth_user" does not exist
LINE 1: SELECT (1) AS "a" FROM "auth_user" WHERE "auth_user"."userna...
                               ^

I looked at the source :
They directly use the django.contrib.auth.models.User class, which I replaced with my User class - I thought that this was a mistake and inserted a crutch:
Added the following to myapp.forms : And in CreateForm:
from myapp.models import User

class Meta:
         model = User
         fields = ("username",)

PS I note that there were errors during the migration. Chopped from the shoulder - deleted all migrations and the base. Created a database and created migrations. Migrated - everything is OK.
Everything works, but I don't want to do it this way.
How to be?

Answer 1

The doc says:
Depends on the User model. Must be re-written for any custom user model.
Those. you need to rewrite the form. And that's not the only thing that needs to be rewritten. Actually, everything is painted in the dock.
If the task is only to store additional information about the user, then it is easier to make a separate UserProfile model and associate it with the main OneToOne.