Custom Password Less Authentication in Django

Authentication backends allow the ability to change what method checks your users credentials.

An Example for the use of custom authentication backend:

For web services, ie Facebook authentication, you don't have access to user data like a password. Without password(not like random string) we can't create a user in django. 

Facebook connect provides you details of the currently authenticated user. But to maintain the login_required decorator or to a user request.user you still need to have them logged in using Django. 
That's where the Authentication Backend comes in.

from django.contrib.auth.backends import ModelBackend
from peeldb.models import User


class PasswordlessAuthBackend(ModelBackend):
    """Log in to Django without providing a password.

    """
    def authenticate(self, username=None):
        try:
            return User.objects.get(username=username)
        except User.DoesNotExist:
            return None

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

In your settings.py add


AUTHENTICATION_BACKENDS += (
    # ... your other backends
    'social.auth_backend.PasswordlessAuthBackend',
    # path to your custom authentication file
    # appname.filename.classname
)

then to authenticate a registered user, we can override authenticate function without password in our views like

   user = authenticate(username={{user_email}})

   login(request, user)

Posted On 31 July 2015 By MicroPyramid


Need any Help in your Project?Let's Talk

Latest Comments
Related Articles
How to Create initial django migrations for existing DB schema.

Django provides the comfort database migrations from its version 1.8, with which we can avoid the usage of third party packages like south. Adding migrations ...

Continue Reading...
How to monitor django application live events with sentry

Let us now learn how to track exceptions and events in SENTRY. We will setup browser and server end tracking for Django Project.

Continue Reading...
How to use nested formsets in django

Django Formsets manage the complexity of multiple copies of a form in a view. By using formsets, you can know how many forms were their ...

Continue Reading...
open source packages

Subscribe To our news letter

Subscribe and Stay Updated about our Webinars, news and articles on Django, Python, Machine Learning, Amazon Web Services, DevOps, Salesforce, ReactJS, AngularJS, React Native.
* We don't provide your email contact details to any third parties