Populating media player source automatically in dropdown?

[iamthekings5]

Hi,

For some reason I've decided I wanted to make a functional media player in a tile card. Everything is going according to plan, but my SpotifyPlus media player has dynamically changing list of sources I can stream to, like this:
source_list:

• DLAPTOP
• Speaker
• Speaker (Home Assistant)

Is it possible for me to dynamically populate a drop down with this list that I can use to select sources? What would be the best way to approach this problem?

[Nerwyn]

You can't dynamically add and remove options, but you can dynamically set the option option using templates, and then hide options that are out of index range. Something like this might work? You'd have to copy the option for the max length list you want and also update all the set i = statements.

type: dropdown
entity_id: media_player.lounge_google_tv_adb
options:
  - entity_id: media_player.lounge_google_tv_adb
    option: >-
      {% set i = 0 %}{% set sources = state_attr(config.entity, "source_list")
      %}{% if i < (sources | length) %}{{ sources[i] }}{% endif %}
    tap_action:
      action: perform-action
      perform_action: media_player.select_source
      target:
        entity_id:
          - media_player.lounge_google_tv_adb
      data:
        source: '{{ render(config.option) }}'
    styles: |-
      {% set i = 0 %}
      {% set sources = state_attr(config.entity, "source_list") %}
      {% if i >= (sources | length ) %}
      :host {
        display: none;
      }
      {% endif %}
value_attribute: source

[iamthekings5]

he option option using templates, and then hide options that are out of index. Something like this might work? You'd have to copy the option for the max length list you want and also update all the set i = statements.

Hi,

This is a good solution, but I am encountering an issue where I copied your code and pasted it 4 times when my source_list has 3 items, adjusting the "set i = ..." statements and it appears like this when selecting:

It seems the fourth item is still appearing as an option. I will see if I can think of a solution but if you have any ideas do let me know!

Thank you for your help.

[iamthekings5]

I have solved the issue by putting >= instead of > for the criteria under styles, thank you for your help.