Last changed/Last updated

VDRainer · April 19, 2017, 10:55pm

Hi, inspired by this topic i made a python script for getting the real last_changed timestamp.
Maybe someone can use it.

rhodges · August 16, 2017, 4:51pm

I would like to see this restored upon startup as well. We have the history, not sure why it can’t be read into the state machine when HA is restarted.

tySwift93 · August 16, 2017, 7:00pm

Completely agree. Seems like an excellent feature to have
@rhodges, have you looked into how difficult this would be to implement?

rhodges · August 17, 2017, 12:48am

Not yet. I was thinking of playing with AppDaemon first and see what I can do there.

goyney · December 11, 2017, 3:19am

I would like to add my support for the history timestamp to be restored upon a HASS restart. Because of other issues with serial devices just bombing occasionally, I have my HASS instance scheduled to restart every morning to prevent complications with not being able to communicate with those serial devices.

This makes the last_updated dates always off and makes some functionality in a React app I’m writing useless.

boojew · August 17, 2019, 3:04am

I know this is a very old thread, but I would love to see this implemented. I’ve been building out a security use case and while there are workarounds to not having the state accurately recorded for a device, they are very manual and a bit tedious.

tyjtyj · September 15, 2019, 4:39pm

It been 2 year, we really hope this being implemented.
This just need to be loaded from DB when HASS started

I believe we already retain state after reboot why cant we get last_changed stat retained ?

Based on this, it is possible right ?

github.com

home-assistant/core/blob/fd359c622241a0ce39005e40f5a88e9c6db9ac88/homeassistant/helpers/restore_state.py

"""Support for restoring entity states on startup."""
import asyncio
import logging
from datetime import timedelta, datetime
from typing import Any, Dict, List, Set, Optional

from homeassistant.core import (
    HomeAssistant,
    callback,
    State,
    CoreState,
    valid_entity_id,
)
from homeassistant.const import EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP
import homeassistant.util.dt as dt_util
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.event import async_track_time_interval
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers.json import JSONEncoder
from homeassistant.helpers.storage import Store

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Mariusthvdb · February 25, 2020, 6:29pm

yes that would be nice indeed, and much wanted… Any news on this yet?

DeanLongstaff · March 9, 2020, 1:04pm

I back this also, i am constantly adding things to home assistant and restart it every few days so when everything is reset its annoying.

sender · May 16, 2020, 6:23am

+1 here yes

burg93 · September 22, 2020, 2:22pm

This would be pretty useful, it annoys me how it’s currently setup. It doesn’t make sense to me as an end-user to see all my last-changed states refreshed when I restart HA. I want to see the last time it properly changed state not just became unavailable.

JBS · October 12, 2020, 8:40am

I am also looking forward to this feature!

Saturnus · March 7, 2021, 5:49pm

Join here:

shukkar · March 8, 2021, 11:17pm

The architecture issue mentioned above is marked closed. Hope it is re-opened.

Saturnus · March 9, 2021, 3:52pm

As can be read, the change will only be considered when a Python expert prepares the necessary code for this. Since that won’t be me (programming skills near absent), the issue is closed.

Sjorsa · March 10, 2021, 10:12am

So there is no hope of this being implemented soon? I think I will try it with another user’s idea of making a datetime entity but I dont really want to clog up my entities with these. Maybe it can be a custom attribute…

Saturnus · March 15, 2021, 6:21pm

No hope. In all this time since the issue/topic was opened, (to my knowledge) only one user wrote some Python code, it worked partly for me. You could try it: https://github.com/home-assistant/architecture/issues/230#issuecomment-600484354

amadeuspzs · September 26, 2021, 9:04am

Another appeal to vote for the feature request to help on this: Retain last state change data of a sensor after reboot

eikowagenknecht · November 24, 2021, 9:50pm

Just stumbled upon this and I’m really sad to head that this basic functionality is missing in Home Assistant. Coming from openHAB myself this seems like a rather big showstopper

markfrancisonly · November 29, 2022, 4:00pm

Paulus we need an option to populate last_changed state machine values from the history database. With the flourishing of the platform, and high frequency of updates, restarting Home Assistant is now a common and regular occurrence for most