extend-django-user-model

The correct way to extend Django User Model and use email and password to login

Most people customizing or extending the Django user model in the opposit way, I would like to share my experience how to do it the correct way without writing so much code.

model.py

1- Here we extend User model by inherit AbstractUser class
2- Convert username field from models.CharField to EmailField and set unique=True
3- Set email field to None
4- Set REQUIRED_FIELDS to empty array.
5- Set EMAIL_FIELD = "username"

	from django.contrib.auth.models import AbstractUser
	from django.core.mail import EmailMessage
	from django.db import models
	from django.utils.translation import gettext_lazy as _
	
	
	class User(AbstractUser):
	username = models.EmailField(_('email'), max_length=255, unique=True)
	is_verified = models.BooleanField(default=False)
	is_banned = models.BooleanField(default=False)
	email = models.CharField(max_length=100, default=None)

	REQUIRED_FIELDS = []
	USERNAME_FIELD = "username"
	EMAIL_FIELD = "username"
	
	class Meta:
		verbose_name = _("user")
		verbose_name_plural = _("users")
	
	def email_user(self, subject, message, from_email=None, **kwargs) -> int:
		""" Email this user."""
		msg = EmailMessage(subject, message, from_email, [self.username], **kwargs)
	return msg.send()
	
	def __str__(self):
		return self.username

settings.py

Set AUTH_USER_MODEL = 'users.User' replace users with your app name.

AUTH_USER_MODEL = 'users.User'

In your app.admin.py in my case my app name is users

#H1 admin.py We need to inherit UserAdmin class and finally register both User and UserAdmin

from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.utils.translation import gettext_lazy
from users.models import User


class UsersAdmin(UserAdmin):
    list_display = ("username",)
    fieldsets = (
        (gettext_lazy('Authentication'), {"fields": ("username", "password")}),
        (gettext_lazy("Personal info"), {"fields": ("first_name", "last_name")}),
        (
            gettext_lazy("Permissions"),
            {
                "fields": (
                    "is_active",
                    "is_staff",
                    "is_superuser",
                    "groups",
                    "user_permissions",
                ),
            },
        ),
        (gettext_lazy("Verifications"), {"fields": ("is_verified", "is_banned")}),
        (gettext_lazy("Important dates"), {"fields": ("last_login", "date_joined")}),
    )


admin.site.register(User, UsersAdmin)

From now on we are using Django built-in User model,
We have added our extra fields and we can login/register by using email and password.
We don't need to create custom UserManger().
You can user reset-password built-in form in Django admin.
We still need to use username field,
Exp:

user = User.objects.filter(username='admin@admin.com').first()
user = User.objects.create_user(username='admin@admin.com', password='password')

All done.
I hope you enjoy coding.