ember-drag-sort empty list title https://stackoverflow.com/q/52787698/901944

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  items1: [
    {name: "Foo"},
    {name: "Bar"},
    {name: "Baz"},
  ],
  
  items2: [],
  
  actions: {
    dragEndAction ({sourceList, sourceIndex, targetList, targetIndex}) {
      if (sourceList === targetList && sourceIndex === targetIndex) return

      const item = sourceList.objectAt(sourceIndex)

      sourceList.removeAt(sourceIndex)
      targetList.insertAt(targetIndex, item)
    }
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}


.dragSortList {
  border: 1px solid black;
}

.dragSortList.-isEmpty:not(.-isDragging):after {
  content: "No Items in List";
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

{{#drag-sort-list
  items         = items1
  dragEndAction = (action 'dragEndAction')
  as |item|
}}
  {{item.name}}
{{/drag-sort-list}}

<hr>

{{#drag-sort-list
  items         = items2
  dragEndAction = (action 'dragEndAction')
  as |item|
}}
  {{item.name}}
{{/drag-sort-list}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-drag-sort": "1.1.1"
  }
}