Function on_delete_file

apps/knowledge/models/knowledge.py:474–477

(sender, instance, **kwargs)

@receiver(pre_delete, sender=File)
def on_delete_file(sender, instance, **kwargs):
    exist = QuerySet(File).filter(loid=instance.loid).exclude(id=instance.id).exists()
    if not exist:
        select_one(f"SELECT lo_unlink({instance.loid})", [])