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Login with email or username

Author:
zeeg
Posted:
August 23, 2008
Language:
Python
Version:
.96
Tags:
email login auth backend
Score:
5 (after 7 ratings)

A simple backend which allows you to login with either an email address or a username.

It should be combined with another backend for checking permissions:

AUTHENTICATION_BACKENDS = (
    'myproject.accounts.backends.EmailOrUsernameModelBackend',
    'django.contrib.auth.backends.ModelBackend'
)

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from django.conf import settings
from django.contrib.auth.models import User

class EmailOrUsernameModelBackend(object):
    def authenticate(self, username=None, password=None):
        if '@' in username:
            kwargs = {'email': username}
        else:
            kwargs = {'username': username}
        try:
            user = User.objects.get(**kwargs)
            if user.check_password(password):
                return user
        except User.DoesNotExist:
            return None

    def get_user(self, user_id):
        try:
            return User.objects.get(pk=user_id)
        except User.DoesNotExist:
            return None

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Comments

wozozo (on May 14, 2010):
<p>thanks!</p>

#

nhammond (on October 14, 2014):
<p>If you want to do this, be sure to forbid the '@' character in usernames. Otherwise some serious problems can arise.</p>

#

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