HA room info card

card template

kamer_info:
  aspect_ratio: 1/1
  show_state: false
  triggers_update: all
  variables:
    climate_entity: 
    light_entity: 
    temperature_entity:
    humidity_entity:
    view:
  tap_action:
    action: navigate
    navigation_path: "[[[ return variables.view ]]]"
  hold_action:
    action: call-service
    service: light.toggle
    service_data:
      entity_id: "[[[ return variables.light_entity ]]]"
  styles:
    grid:
      - grid-template-areas: '"heating lights" "i i" "n n" "stats stats"'
      - grid-template-columns: 1fr 1fr
      - grid-template-rows: min-content 1fr min-content min-content
    name:
      - color: var(--text-color)
      - justify-self: start
      - padding-left: 10px
      - font-size: 1.2rem
    icon:
      - color: var(--paper-item-icon-color)
    custom_fields:
      lights:
        - align-self: start
        - justify-self: end
        - padding-right: 10px
        - color: >-
            [[[ return states[variables.light_entity].state == "on" ? "#f7cd89" : "var(--secondary-text-color)"; ]]]
        - opacity: >-
            [[[ return states[variables.light_entity].state == "on" ? 1 : 0.6; ]]]
      heating:
        - align-self: start
        - justify-self: start
        - padding-left: 10px
        - color: >-
            [[[ return states[variables.climate_entity].state == "heat" ? "#ff8100" : "var(--secondary-text-color)"; ]]]
        - opacity: >-
            [[[ return states[variables.climate_entity].state == "heat" ? 1 : 0.6; ]]]
      stats:
        - color: var(--secondary-text-color)
        - font-size: 0.9rem
        - padding-left: 8px
        - align-self: start
        - justify-self: start
  custom_fields:
    heating: |
      [[[
        if (states[variables.climate_entity] != undefined) {
          return '<ha-icon icon="mdi:fire" style="width: 26px; height: 26px;"></ha-icon>'
        }
      ]]]
    lights: |
      [[[ 
        if (states[variables.light_entity] != undefined) {
          return '<ha-icon icon="mdi:lightbulb" style="width: 26px; height: 26px;"></ha-icon>'
        }
      ]]]
    stats: |
      [[[
        let stats = [];
        let temperature;
        let humidity;

        if (states[variables.climate_entity] != undefined) {
          temperature = states[variables.climate_entity].attributes.current_temperature;
          humidity = states[variables.climate_entity].attributes.current_humidity;
        } else {
          if (states[variables.temperature_entity] != undefined) {
            temperature = Math.round(states[variables.temperature_entity].state);
          }
          if (states[variables.humidity_entity] != undefined) {
            humidity = Math.round(states[variables.humidity_entity].state);
          }
        }
        if (temperature) {
          stats.push(`<ha-icon icon="mdi:thermometer" style="width: 12px; height: 12px;"></ha-icon><span>${temperature}°C</span>`);
        }
        if (humidity) {
          stats.push(`<ha-icon icon="hass:water" style="width: 12px; height: 12px;"></ha-icon><span>${humidity}%</span>`);
        }
        
        return stats.join(' ');
      ]]]

grid with all rooms

type: grid
columns: 3
square: true
title: Kamers
cards:
  - type: custom:button-card
    template: kamer_info
    icon: mdi:sofa
    name: Woonkamer
    variables:
      climate_entity: climate.woonkamer
      light_entity: light.woonkamer
      view: /lovelace/woonkamer
      
  - type: custom:button-card
    template: kamer_info
    icon: mdi:chef-hat
    name: Keuken
    variables:
      light_entity: light.keuken
      temperature_entity: sensor.woonkamer_klimaat_temperature
      humidity_entity: sensor.woonkamer_klimaat_humidity
      view: /lovelace/keuken

  - type: custom:button-card
    template: kamer_info
    icon: mdi:toilet
    name: Toilet
    variables:
      light_entity: light.toilet
      temperature_entity: sensor.toilet_klimaat_temperature
      humidity_entity: sensor.toilet_klimaat_humidity
      view: /lovelace/toilet

  - type: custom:button-card
    template: kamer_info
    icon: mdi:bed-king
    name: Slaapkamer
    variables:
      climate_entity: climate.slaapkamer
      light_entity: light.slaapkamer
      view: /dashboard-boven/slaapkamer

  - type: custom:button-card
    template: kamer_info
    icon: mdi:wardrobe
    name: Kledingkamer
    variables:
      climate_entity: climate.kledingkamer
      light_entity: light.kledingkamer
      view: /dashboard-boven/kledingkamer

  - type: custom:button-card
    template: kamer_info
    icon: mdi:bed-empty
    name: Logeerkamer
    variables:
      climate_entity: climate.logeerkamer
      light_entity: light.logeerkamer
      view: /dashboard-boven/logeerkamer

  - type: custom:button-card
    template: kamer_info
    icon: mdi:shower
    name: Badkamer
    variables:
      climate_entity: climate.badkamer
      light_entity: light.badkamer
      view: /dashboard-boven/badkamer

  - type: custom:button-card
    template: kamer_info
    icon: mdi:home-roof
    name: Zolder
    variables:
      climate_entity: climate.zolder
      light_entity: light.zolder
      view: /dashboard-boven/zolder

Hello; I am new to this. Please excuse me for that. How do we apply the card template file? I couldn't get any results. I would be happy if you could help me.

Hello; I am new to this. Please excuse me for that. How do we apply the card template file? I couldn't get any results. I would be happy if you could help me.

It's probably best to consult the button card documentation at https://github.com/custom-cards/button-card?tab=readme-ov-file#configuration-templates
I haven't been using button card for a very long time