Template for setting input_select options from JSON

[Didgeridrew]

If the value needs to by dynamic/editable through HA actions then your best bet is probably:

Trigger based template sensor to store global variables

This was posted earlier here. I’ve added some improvements, mostly to avoid errors, and also added some additional stuff suggested by @erkr in this post It can happen you want to store some data to use it in another automation, or make sure it’s still available after a restart of HA. You can use helpers for that (eg and input_text entity) but these are limited in which types you can store, and they can be easily edited in the GUI. The configuration below creates a trigger based templates senso…

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If the json is going to be relatively static, and you don’t mind being limited to manually editing it, you could also store and retrieve it in the same way you do Template macros. This is an undocumented use of the custom templates files, but it does work generally… though, I’ve never tested it for this exact use.

In use you would just copy paste your set statement from your post into a file, for example cd_changer.jinja, then your action would be something along the lines of:

alias: New automation
description: ""
triggers:
  - trigger: state
    entity_id:
      - sensor.esp8266_test_playing_disk
conditions: []
actions:
  - action: input_select.set_options
    metadata: {}
    data:
      options: |
        {% from 'cd_changer.jinja' import my_test_json %}
        {{ my_test_json.cd[states('sensor.esp8266_test_playing_disk') |int -1].Tracks}}
    target:
      entity_id: input_select.cdp_cd_list
mode: single

Note that I have altered the action you had in your original post since it did not make sense to use the value from the NumberTracks attribute there.

FWIW, you would probably be better off using a Template Select instead of an Input Select + multiple automations.