Notify Slack of devices home/away state when it changes

Configuration
1

I’m having some trouble coming up with the config for Slack notification when multiple device is home or away. I’m assuming it is possible to do it with a single automation rather than multiples.

Say I have device_tracker.iphone_1 and device_tracker.iphone_2. If device_tracker.iphone_x changed from not_home to home, or home to not_home, then I get a Slack notification that says ‘<friendly_name_of_device> is <state_of_device>’. Could use some guidance on how to do this in a concise way.

2

Do you have your slack notifications working yet? I’ll assume you do and that the service is called notify.slack. Then we can solve this with templating:

alias: "Tell me about changes of who is home"
trigger:
  - platform: state
    entity_id:
      - device_tracker.iphone_1
      - device_tracker.iphone_2
    to: 'home'
  - platform: state
    entity_id:
      - device_tracker.iphone_1
      - device_tracker.iphone_2
    to: 'not_home'
action:
  - service: notify.slack
    data_template:
      message: >-
        {{ trigger.to_state.name }} is {{ trigger.to_state.state }}

There are (of course) other ways of solving this, but this one should be fairly obvious I hope.

3

Thanks. Didn’t realize you can have multiple triggers.