如何在ember中使用鼠标拖动选择元素？

I have my template like this,

我有这样的模板,

<div>
    {{#each model as |item|}}
        {{#view "selection" model=item}}
          <div class="child_div">{{item.name}}</div> 
        {{/view}}
    {{/each}}
</div>
<div