@receiver(post_delete, sender=PAFReviewersRole)
def handle_internal_approval_projects(sender, instance, **kwargs):
# if last Project reviewer role
if PAFReviewersRole.objects.count() == 0:
for project in Project.objects.filter(status=INTERNAL_APPROVAL):
# remove all paf approvals(approved and unapproved both)
project.paf_approvals.all().delete()
# update project status back to Draft
project.status = DRAFT
project.save(update_fields=["status"])
# remove all tasks for internal_approval project
remove_tasks_of_related_obj(project)