Таймер на форме django?

class Foo(models.Model):
    user = models.ForeignKey(MyUser)
    action_datetime = models.DateTimeField(auto_now_add=True)


from datetime import datetime, timedelta


def form_view(request):
    if Foo.objects.get(
        user=request.user, 
        action_datetime__gt=datetime.now() - timedelta(days=1)):
           # do what u want

сейчас - день назад = вчера = datetime.now() - timedelta(days=1)