user_log.py

import logging

from django.contrib.auth.signals import (
    user_logged_in,
    user_logged_out,
    user_login_failed,
)
from django.dispatch import receiver

log = logging.getLogger(__name__)


@receiver(user_logged_in)
def user_logged_in_callback(sender, request, user, **kwargs):
    # to cover more complex cases:
    # http://stackoverflow.com/questions/4581789/how-do-i-get-user-ip-address-in-django
    ip = request.META.get("REMOTE_ADDR")

    log.debug("login user: {user} via ip: {ip}".format(user=user, ip=ip))


@receiver(user_logged_out)
def user_logged_out_callback(sender, request, user, **kwargs):
    ip = request.META.get("REMOTE_ADDR")

    log.debug("logout user: {user} via ip: {ip}".format(user=user, ip=ip))


@receiver(user_login_failed)
def user_login_failed_callback(sender, credentials, **kwargs):
    log.warning(
        "login failed for: {credentials}".format(
            credentials=credentials,
        )
    )