Template Support for Custom Keys

[Ayuus]

Hello,

I expected that custom buttons would allow me to write a template, so I tried to implement a toggle button for muted audio:

custom_keys:
  my_volume_mute:
    icon: mdi:volume-high
    service: media_player.volume_mute
    target:
      entity_id: media_player.lg_tv
    data:
      is_volume_muted: "{{ not state_attr('media_player.lg_tv', 'is_volume_muted') }}"

However, HA c omplains about "invalid value for Boolean". In Developer Tools, Templates, the code works OK.

[Nerwyn]

This card does not support jinja templates. Once I figure out how to add template support, I'll do so.

[Ayuus]

OK, clear. Any other way to implement mute/unmute via toggle button?

[Nerwyn]

The media_player.volume_mute service should already be a toggle, but I guess the behavior be different for LG webOS. Unfortunately until I figure out jinja template support (I'm out of town for a week and won't be able to work on it for a while) you'd need two separate buttons. You could make it so that this button always mutes and the volume up/down buttons should unmute it (unless LG webOS behaves differently).

[thegreekgeek]

I'd also appreciate this, I'm trying to selectively enable my theater mode automation and there's no feedback to the toggle.

[schmierlappe]

would also love this for the styling section

[Nerwyn]

I got nunjucks (jinja2 for JavaScript that's 99% the same thing) template support working in my other project. Once I finish updating that I'll work on adding it to this one. ETA would be a week or so.

[Nerwyn]

Template support has been added in v3.1.0. It works for everything in the card - icons, row entries, styles, service call data, etc.

[Ayuus]

Works great, thx!