django authenticate with email
from django.contrib.auth import get_user_model from django.contrib.auth.backends import ModelBackend class EmailBackend(ModelBackend): def authenticate(self, request, username=None, password=None, **kwargs): UserModel = get_user_model() try: user = UserModel.objects.get(email=username) except UserModel.DoesNotExist: return None else: if user.check_password(password): return user return None