from django.dispatch import Signal, receiver from misago.users.signals import username_changed from .models import Category delete_category_content = Signal() move_category_content = Signal(providing_args=["new_category"]) """ Signal handlers """ @receiver(username_changed) def update_usernames(sender, **kwargs): Category.objects.filter(last_poster=sender).update( last_poster_name=sender.username, last_poster_slug=sender.slug )