index.hbs

{{#sortable-list list=model clickAction=editContact}}
  <p>
    {{model.length}}
    <span class="name">
      {{ name }}{{#if role}}
        <em>, {{ role }}</em>
      {{/if}}
    </span>
  </p>
{{/sortable-list}}

sortable-list.hbs

{{#each item in list}}
  <li class="topcoat-list__item small drag-handle" {{action 'clickAction' this}}>
    <div class="handle"></div>
    {{#with item}}
      {{yield}}
    {{/with}}
  </li>
{{/each}}