post_save signal not working (Django 1.7) about django-cassandra-engine HOT 3 CLOSED

import logging

from django.contrib.auth.models import User
from django.db import models
from django.db.models.signals import post_save
from django.dispatch import receiver

log = logging.getLogger(__name__)


class UserProfile(models.Model):
    uuid = models.CharField(max_length=36)
    user = models.OneToOneField(User)


@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    """
    When a new user is created, add a UserProfile
    """
    log.debug('received post save signal: {}'.format(instance))
    if created:
        UserProfile.objects.create(user=instance)