from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import GlobalSystemSettings

@receiver(post_save, sender=GlobalSystemSettings)
def update_system_settings(sender, instance, **kwargs):
    # Безопасное использование сигнала
    if instance:
        print(f"Настройки системы обновлены: {instance.system_name}")