Scene1.html

<script type="text/x-handlebars" data-template-name="rooms">
  <ul id="rooms">
    {{#each controller}}
      <li>
        <h1>{{name}}</h1>
        {{ partial devices }}
      </li>
    {{/each}}
  </ul>
</script>
<script type="text/x-handlebars" data-template-name="_devices">
  {{#if devices}}
    <ul class="devices">
      {{#each device in devices}}
        <li class="{{device.type}}">{{device.name}}</li>
      {{/each}}
    </ul>
  {{/if}}
</script>