Template Editor vs. Script Implementation

Configuration
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1

In order to save myself what little hair I have left I’d like to understand better why something that works in the template editor completely borks when being run as a script.

Using MA’s get_queue action in dev tools I copy the result over to the template editor and can access the object using something like this.

{% set action_response = {"media_player.livingroom_stereo":{"queue_id":"apc... etc" %}
{% set queue_info = action_response['media_player.livingroom_stereo'] %}
{{ queue_info.current_item.stream_title }}

Works like a charm, but if I pass that into a script and try to run it (even just reloading the templates) it borks and throws the error:
Template variable error: 'dict object' has no attribute 'current_item' when rendering '{{ queue_info.current_item.stream_title }}'
Instead I have to use something like this for it to work in a script.

{% set action_response = {"media_player.livingroom_stereo":{"queue_id":"apc... etc" %}
{{ action_response ['media_player.livingroom_stereo'].current_item.stream_title }}

So what’s the difference between how the template editor and the script engine parse this?
The script:

# This works
      - action: music_assistant.get_queue
        target:
          entity_id: media_player.livingroom_stereo
        response_variable: queue_info

      - event: test_script
        event_data:
          stream_title: "{{ queue_info['media_player.livingroom_stereo'].current_item.stream_title }}"
      - stop: null
# This borks
      - action: music_assistant.get_queue
        target:
          entity_id: media_player.livingroom_stereo
        response_variable: queue_info

      - variables:
          queue_two: "{{ queue_info['media_player.livingroom_stereo'] }}"

      - event: test_script
        event_data:
          stream_title: "{{ queue_two.current_item.stream_title }}"
      - stop: null
2

There’s no definition for queue_two

3

What’s the full response from your action_response? Need the full response in order to provide a reason why it doesn’t work.

4

Thanks… copy pasta as Frenck would say, I’ve updated my original post with the variable definition in my script. It was the point of my template editor experiment after all :roll_eyes:

5

This is what gets copied from dev tools > actions.

{% set action_response = {"media_player.livingroom_stereo":{"queue_id":"apc2f53503cbbc","active":true,"name":"Livingroom Stereo","items":69,"shuffle_enabled":false,"repeat_mode":"off","current_index":9,"elapsed_time":14197,"current_item":{"queue_item_id":"1ad41538ba1e4532bcb3ee6a0e008bed","name":"Dire Straits - Sultans of Swing","duration":350,"media_item":{"media_type":"track","uri":"library://track/2","name":"Sultans of Swing","version":"","image":null,"favorite":false,"explicit":null,"artists":[{"media_type":"artist","uri":"library://artist/1","name":"Dire Straits","version":"","image":null}],"album":{"media_type":"album","uri":"library://album/1","name":"Sultans of Swing: The Very Best of Dire Straits","version":"","image":null,"favorite":false,"explicit":null,"discart_image":null,"artists":[{"media_type":"artist","uri":"library://artist/1","name":"Dire Straits","version":"","image":null}]}},"stream_title":null,"stream_details":{"provider":"filesystem_smb--whAumDbs","item_id":"Music/Dire Straights/Dire Straits- Sultans of Swing .mp3","content_type":"mp3","sample_rate":44100,"bit_depth":16,"bit_rate":320}},"next_item":{"queue_item_id":"cbe87c10e3f047c98f98543bf6cab89b","name":"Timothy Scott McNabb - Friends That Last","duration":206,"media_item":{"media_type":"track","uri":"library://track/368","name":"Friends That Last","version":"","image":"https://i.scdn.co/image/ab67616d0000b2733578e5e080d1cbae86f5faa2","favorite":true,"explicit":false,"artists":[{"media_type":"artist","uri":"library://artist/12","name":"Timothy Scott McNabb","version":"","image":null}],"album":{"media_type":"album","uri":"library://album/40","name":"Bare Bones","version":"","image":"https://i.scdn.co/image/ab67616d0000b2733578e5e080d1cbae86f5faa2","favorite":true,"explicit":null,"discart_image":null,"artists":[{"media_type":"artist","uri":"library://artist/12","name":"Timothy Scott McNabb","version":"","image":null}]}},"stream_title":null,"stream_details":{"provider":"spotify--tux4BSU5","item_id":"0nYxvpk6iX99Lb7Vs1Ci4F","content_type":"ogg","sample_rate":44100,"bit_depth":16,"bit_rate":320}}}} %}
6

That’s not valid. When the resolver attempts to assign a type to the response, it will fail, which results in queue_two not being defined.

Coming directly from the response, it will work because it’s already typed. But as soon as you attempt to do this:

queue_two: "{{ queue_info['media_player.livingroom_stereo'] }}"

the system is trying to type it again because it’s a new template result.

Long story short, use the response only. Or traverse the object and remove the nulls

7

THANK YOU! That makes sense to me, I can keep my remaining hair :grinning:.

I do test for values later in the script as they are sometimes defined depending on what’s in the queue, never thought to test the original assignment. Thanks for the lesson.