How to change the default username to email, in DRF obtain token login

[Suraj Singh]

Kindly help me to solve this issue, posted it in django forum,

https://forum.djangoproject.com/t/how-to-change-the-default-username-to-email-in-drf-obtain-token-login/15383

[Abhishek Chauhan]

Use custom user model and override username to email

On Fri, 12 Aug 2022 at 9:03 AM, Suraj Singh <surajsi...@gmail.com> wrote:

Kindly help me to solve this issue, posted it in django forum,

https://forum.djangoproject.com/t/how-to-change-the-default-username-to-email-in-drf-obtain-token-login/15383

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Abhishek Chauhan

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 @abhiazh

[M Adnan]

email = request.data.get('email').lower(

).strip() if 'email' in request.data else None

password = request.data['password'] if 'password' in request.data else None

if not email or not password:

return Response({"success": False, 'response': {'message': 'Invalid data.'}},

status=status.HTTP_400_BAD_REQUEST)

try:

user = User.objects.get(email=email).username

except:

return Response({"success": False, 'response': {'message': 'Incorrect User Credentials!'}},

status=status.HTTP_404_NOT_FOUND)

try:

user = User.objects.get(email=email is_active=True).username

except:

return Response({"success": False, 'response': {'message': 'Sorry! Your account is not active!'}},

status=status.HTTP_400_BAD_REQUEST)

user = authenticate(username=user, password=password)

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[M Adnan]

try this I hope this will help you

[Antun Franjin]

Something like this:

from django.contrib.auth.models import AbstractUser, AbstractBaseUser

from django.db import models

from django.utils.translation import gettext_lazy as _

class CustomUser(AbstractUser):

USERNAME_FIELD = 'email'

email = models.EmailField(_('email address'), unique=True)

REQUIRED_FIELDS = ['username',]

class Meta:

db_table = 'auth_user'

And ofc you need to overirde backend if you want to use custom user:

class CustomBackend(ModelBackend):

def authenticate(self, request, username=None, password=None, **kwargs):

try:

user = UserModel.objects.get(

Q(username__iexact=username) | Q(email__iexact=username))

except UserModel.DoesNotExist:

UserModel().set_password(password)

except UserModel.UserMultipleObjectsReturned:

return UserModel.objects.filter(email=username).order_by('id').first()

else:

if user.check_password(password) and self.user_can_authenticate(user):

return user

def get_user(self, user_id):

try:

user = UserModel.objects.get(pk=user_id)

except UserModel.DoesNotExist:

return None

return user if self.user_can_authenticate(user) else None

And in settings file:

AUTH_USER_MODEL = 'users.CustomUser'

AUTHENTICATION_BACKENDS = (

'path.to_backends_folder.CustomBackend',

'guardian.backends.ObjectPermissionBackend',

)

I think something like that maybe some stuff you will not need but anyhow.

Best Regards, Antun

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