Sortable example

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
	actions: {
    reorderItems() {
      console.log('reorder')
    }
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
  	return [
    	{ name: 'Lorem' },
    	{ name: 'Ipsum' },
    	{ name: 'Dolorem' },
    	{ name: 'Set' },
    	{ name: 'Amit' }
    ];
  }
});

templates.application.hbs

<h1>Sortable example</h1>
<br>
<br>
<h2>test</h2>
{{#sortable-group tagName="ul" onChange=(action "reorderItems") as |group|}}
  {{#each model as |item|}}
    {{#sortable-item tagName="li" model=item group=group handle=".handle"}}
      {{item.name}}
      <span class="handle">&varr;</span>
    {{/sortable-item}}
  {{/each}}
{{/sortable-group}}
<br>
<br>

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-data": "3.4.2",
    "ember-sortable": "1.12.3"
  }
}