New Twiddle

controllers.application.js

import Ember from 'ember';

let RowItem = Ember.Object.extend({
	order: 0
});

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  sortDirection: 'asc',
  items: Ember.computed(function(){
  	return Ember.A([
      RowItem.create({order:1}),
      RowItem.create({order:2}),
      RowItem.create({order:3}),
    ]);
  }),
  sortedItems: Ember.computed('items', 'sortDirection', function(){
  	let result = this.get('items').sort(function(a, b) {
    	return a.get('order') - b.get('order');
    });
    if (this.get('sortDirection') === 'desc') {
    	return result.reverse();
    } else {
      return result;
    }
  }),
  actions: {
   sort() {
   	if (this.get('sortDirection') === 'desc') {
    	this.set('sortDirection', 'asc');
    } else {
    		this.set('sortDirection', 'desc');
    }
   } 
  }
});

templates.application.hbs

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

In route template:
<ul>
{{#each sortedItems as |item|}}
	<li>{{item.order}}</li>
{{/each}}
</ul>

In component:
{{item-list sortedItems=sortedItems}}


<button {{action 'sort'}}>Sort {{sortDirection}}</button>

templates.components.item-list.hbs

<ul>
{{#each @sortedItems as |item|}}
	<li>{{item.order}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}