django signal

django.contrib.auth.signals.py from django.dispatch import Signal user_logged_in = Signal(providing_args=['request', 'user']) django.contrib.auth.models.py from django.contrib.auth.signals import user_logged_in def update_last_login(sender, user, **kwargs): """ A signal receiver which updates the last_login date for the user logging in. """ user.last_login = datetime.datetime.now() user.save() user_logged_in.connect(update_last_login) django.contrib.auth._init_.py def login(request, user): user_logged_in.send(sender=user.__class__, request=request, user=user)