def on_new_model(cls, sender, **kwargs):
if str(sender._meta) in cls.EXCLUDE:
return # Ignore model
model_id = get_model_id(sender)
ttl = cls.get_model_ttl(model_id)
if not ttl:
return # Disabled
cls._model_ttls[model_id] = ttl
django_signals.post_save.connect(cls.on_update_model, sender=sender)
django_signals.post_delete.connect(cls.on_delete_model, sender=sender)
django_signals.post_init.connect(cls.on_init_model, sender=sender)
def log(cls, sender, instance, op, changes):
"""
Log into audit trail
"""
user = get_user() # Retrieve user from thread local storage
if not user or not user.is_authenticated():
return # No user initialized, no audit trail
if not changes:
logger.debug("Nothing to log for %s", instance)
return
now = datetime.datetime.now()
model_id = get_model_id(sender)
cls._get_collection().insert({
"timestamp": now,
"user": user.username,
"model_id": model_id,
"object": str(instance.pk),
"op": op,
"changes": changes,
"expires": now + cls._model_ttls[model_id]
}, w=0)
