Light Slider for last switched Light

[Frankhag]

Is it possible to have a slider that always controls the last light switched on? any idea how to implement this?

[exetico]

Hi,

Last light switched on, from what source? Only switched on within your floorplan, or overall in Home Assistant?

If its the last one, its more a question about saving in Home Assistant somehow, not anything related to ha-floorplan.

[exetico]

@Frankhag Answer with comments to a reply; Not a fresh reply-thread.

Okay, I see the use-case.

Do you only have a single screen with the floorplan, or?

Are the light slider just a static image, or how did you make that part? Is it a floating normal ha-element, outside the ha-floorplan instance? :-)

[Frankhag]

Yes, at the moment, i have it with a normal ha-element. I have a group of lights and the last light of this group, that was switched on, i can dimm with the slider.

          - type: custom:config-template-card
            variables:
              LAST_LIGHT: states['sensor.last_light_on'].state
            entities:
              - ${LAST_LIGHT}
            card:
              type: custom:slider-button-card
              entity: ${LAST_LIGHT}
              slider:
                direction: left-right
                background: none;
                use_state_color: false
                use_percentage_bg_opacity: false
                show_track: true
                toggle_on_click: false
                force_square: false
              show_name: false
              show_state: false
              compact: true
              icon:
                show: false
                haptic: medium
                use_state_color: true
                tap_action:
                  action: none
                icon: mdi:format-color-fill
              action_button:
                show: false
                icon: mdi:power-standby
                tap_action:
                  action: none
              show_attribute: true
              card_mod:
                style: |
                  ha-card {
                    --ha-card-background: none;
                    box-shadow: 0px 2px 2px 0px rgba(10, 10, 10, 0.6) !important;
                    border-radius: 5px !important;
                  }
            style:
              top: 28%
              left: 78% 
              width: 32%     
              z-index: 5

and the Sensor for last light on:

  - name: "Last Light On"
    unique_id: last_light_on_001
    state: |
      {{ state_attr('light.floorplan', 'entity_id') | select('is_state','on')| expand | sort(attribute = 'last_changed', reverse=1 ) 
      | map(attribute='entity_id') | first }}
    attributes:
      count: "{{states.light | selectattr('state', 'eq', 'on') | list | count}}"
    availability: |-
      {{states.light | selectattr('state', 'eq', 'on') | list | count > 0 }}

[exetico]

If so, you've solved the question, right?

We don't have a slider-implementation in ha-floorplan.

[Frankhag]

this is my floorplan. I want that the light slider controll the last light i switched on from floorplan. when it work like i want, i can hide it and so, i have a hidden light slider always on the same position and with the last light i switched on.