component array sorting

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  content: Ember.A([]),
  sortBy: null,
  
  sortArray: Ember.computed('sortBy', function(){
    if (this.get('sortBy')){
      return this.get('sortBy').replace(' ', '').split(',');
    }
    return [];
  }),

  sortedContent: Ember.computed.sort('content', 'sortArray')
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'optional array sorting bug',
	myArray: Ember.A([{
    id: 1, name: 'Wow' }, {
    id: 2, name: 'Cool' }, {
    id: 3, name: 'OK' }
  ]),
  
  actions: {
    removeItem() {
      let itemToRemove = this.get('myArray.firstObject');
      this.get('myArray').removeObject(itemToRemove);
      debugger;
 
    }
  }
});

templates.application.hbs

<h1>{{appName}}</h1>

<p>Try removing an item with the button.</p>
<p>Notice the list does not update properly when <code>sortBy</code> is null (the default).</p> 
<p>We need a better way to optionally apply sort in <code>my-component.js</code></p>

<h2>Unsorted list</h2>
{{my-component content=myArray}}

<h2>Sorted list</h2>
{{my-component content=myArray sortBy="name"}}

<br>
<button {{action 'removeItem'}}>Remove item</button>
<br>
<br>

templates.components.my-component.hbs

<ul>
  {{#each sortedContent as |item|}}
	  <li>{{item.name}}</li>	
  {{/each}}
</ul>

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}