WTH can't light groups only dim lights that are on Hue-style

Archive Month of "What the heck?!" 2022
22

Many thanks for your work and the code. This seems to solve a long-term problem of mine. But unfortunately it doesn’t quite work yet… I can control the group with the template light, but it behaves in the same way as with the normal light group. if I switch off a lamp in the group and then dim the group via the template light/group, the lamp switches on again.

Am I missing something?

Here is my code:

light:
  - platform: template
    lights:
      template_lichtgruppe_arbeitszimmer:
        friendly_name: "Lichtgruppe Arbeitszimmer"
        level_template: >
          {% set group = 'light.arbeitszimmer' %}
          {{
            expand(group) 
              | selectattr('attributes.brightness', 'defined')
              | selectattr('attributes.brightness')
              | map(attribute='attributes.brightness')
              | list
              | default([0], true)
              | average
          }}
        value_template: "{{ is_state('light.arbeitszimmer', 'on') }}"
        turn_on:
          - service: light.turn_on
            target:
              entity_id: light.arbeitszimmer
        turn_off:
          - service: light.turn_off
            target:
              entity_id: light.arbeitszimmer
        set_level:
          - service: light.turn_on
            target:
              entity_id: >
                {% set group = 'light.arbeitszimmer' %}
                {{
                  expand(group) 
                    | selectattr('attributes.brightness', 'defined')
                    | selectattr('attributes.brightness')
                    | map(attribute='entity_id')
                    | list
                }}
            data:
              brightness: "{{ brightness }}"
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