Message when coming home | Home Assistant | Page 1

pseudo lantern Apr 14, 2026, 6:27 PM

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“I’m trying to create an automation so that I receive a notification when someone comes home. What am I doing wrong?” Can someone please help.

alias: Nachricht wenn jemand nach Hause kommt
description: >-
  xxx
triggers:
  - entity_id:
      - person.xxx
      - person.xxx
      - person.xxx
    to:
      - home
    trigger: state
    from:
      - not_home
conditions: []
actions:
  - data:
      title: Ankunft zu Hause
      message: |
        {{ states[to_state.entity_id].name }} ist gerade nach Hause gekommen.
    action: notify.mobile_app_iphone_xxx
mode: single

mental owlBOT Apr 14, 2026, 6:29 PM

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To format your text as code, enter three backticks on the first line, press Enter for a new line, paste your code, press Enter again for another new line, and lastly three more backticks.
```yaml
example: here
```
Don't forget you can edit your post rather than repeatedly posting the same thing.

unreal laurel Apr 14, 2026, 7:12 PM

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I guess it's "away" instead of "not_home"

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You can also drop the from part completely

pseudo lantern Apr 14, 2026, 7:16 PM

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I always get the error 'to_state' is undefined but i do not know how to handle it I deleted the from part

unreal laurel Apr 14, 2026, 7:31 PM

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Are you using the UI to create the automation?

lean tiger Apr 14, 2026, 8:29 PM

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pseudo lantern I always get the error 'to_state' is undefined but i do not know how to handle i...

to_state is indeed not a variable, it is a member of the trigger variable. should use trigger.to_state.entity_id instead

pseudo lantern Apr 14, 2026, 11:22 PM

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unreal laurel Are you using the UI to create the automation?

no

unreal laurel Apr 15, 2026, 4:08 AM

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pseudo lantern no

Why not? It'll prevent you from making errors like this

lean tiger Apr 15, 2026, 4:12 AM

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not_home is the correct technical name of the state which is translated as Away

pseudo lantern Apr 15, 2026, 1:53 PM

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Thjis is the error i get when using trigger.to_state

Fehler: Error rendering data template: UndefinedError: 'dict object' has no attribute 'to_state'

lean tiger Apr 15, 2026, 1:54 PM

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That means it wasn't triggered by a state trigger

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did you trigger it manually?

pseudo lantern Apr 15, 2026, 1:55 PM

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yes by start action

lean tiger Apr 15, 2026, 1:55 PM

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so in that case the trigger variable will be blank

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and you'll have to handle that specially if you want that to work correctly

pseudo lantern Apr 15, 2026, 1:56 PM

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ok and how ?

lean tiger Apr 15, 2026, 1:56 PM

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What do you want to happen?

pseudo lantern Apr 15, 2026, 1:56 PM

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If someone enters the home zone i wann get a message about that

lean tiger Apr 15, 2026, 1:57 PM

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Yes, and it will.

But if you just force the automation to run, nobody will have entered the home zone, so it can't generate a meaningful message

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If you want to just test this, then test it by modifying an entity state in developer tools, not by just forcing the automation to run with no trigger

pseudo lantern Apr 15, 2026, 1:58 PM

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this means the state has to change first to trigger the message right

lean tiger Apr 15, 2026, 1:58 PM

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correct

pseudo lantern Apr 15, 2026, 1:59 PM

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with thest you mean in developer tools Template

lean tiger Apr 15, 2026, 1:59 PM

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not template, developer tools -> state

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you can force change the state of an entity

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select one of your persons and change it to not_home, and then change it to home

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that should trigger the automation and do a meaningful test

#Message when coming home