Customizing Django’s default user authentication

By default ,Django comes with a Usermodel that includes username,email, password and etc.However,to make changes using email instead of username you will need to customize this User model.

2 Why Customize the User Model?.
Customizing the user model allows you to:

• Use email as the login field instead of username.

• Add the extra field like phone_number or `profile_picture.

• Implement Custom user roles and permissions.

3 Steps to Customize the User Model.
Step 1 :Create a Custom Model
Django recommends using Custom user model at the beginning of your project to avoid complications later.Here's how to define a custom user model:
1 Create the custom user model in app's models.py file .
`
from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin
from django.db import models

class UserManager(BaseUserManager):
def create_user(self, email, password=None, **extra_fields):
if not email:
raise ValueError("The Email field must be set")
email = self.normalize_email(email)
user = self.model(email=email, **extra_fields)
user.set_password(password)
user.save(using=self._db)
return user

def create_superuser(self, email, password=None, **extra_fields):
    extra_fields.setdefault('is_staff', True)
    extra_fields.setdefault('is_superuser', True)

    if extra_fields.get('is_staff') is not True:
        raise ValueError('Superuser must have is_staff=True.')
    if extra_fields.get('is_superuser') is not True:
        raise ValueError('Superuser must have is_superuser=True.')

    return self.create_user(email, password, **extra_fields)

class User(AbstractBaseUser, PermissionsMixin):
email = models.EmailField(unique=True)
first_name = models.CharField(max_length=30, blank=True)
last_name = models.CharField(max_length=30, blank=True)
is_staff = models.BooleanField(default=False)
is_active = models.BooleanField(default=True)
date_joined = models.DateTimeField(auto_now_add=True)

objects = UserManager()

USERNAME_FIELD = 'email'
REQUIRED_FIELDS = ['first_name', 'last_name']

def __str__(self):
    return self.email

`

In this example: