Configuring Abstract User

Using Django Getting Started
1

I don’t get how the Abstract User is configured even after reading the Django documentation, please can I get any help

2

are you find user code?

3 
from django.db import models
from django.contrib.auth.models import AbstractUser, UserManager

# Create your models here.


class UnverifiedUsersManager(models.Manager):
    def get_queryset(self):
        return super().get_queryset().filter(as_student__isnull=True, as_teacher__isnull=True, is_superuser=False)


class SimpleUser(AbstractUser):
    first_name = models.CharField(max_length=256, verbose_name="Name")
    last_name = models.CharField(max_length=256, verbose_name="Surname")
    phone_number = models.CharField(max_length=256, verbose_name="Phone number", unique=True)

    objects = UserManager()
    unverified = UnverifiedUsersManager()

    USERNAME_FIELD = 'phone_number'