from django.db.models.signals import post_save
from django.dispatch import receiver
from django.utils import timezone
from .models import Question


@receiver(post_save, sender=Question)
def update_question_bank_modified_at(sender, instance, **kwargs):
    if instance.question_bank: 
        instance.question_bank.modified_at = timezone.now()
        instance.question_bank.save()