Shifting Test

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    swapByShift() {
      let objs = this.get('model');
      let first = objs.shiftObject();
      let second = objs.shiftObject();
      
      objs.unshiftObjects([second, first]);
    },
    
    swapByReplace() {
      let objs = this.get('model');
      let first = objs.objectAt(0);
      let second = objs.objectAt(1);
      
      objs.replace(0, 1, second);
      objs.replace(1, 1, first);
    }
  }
});

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return [
      { name: 'a' },
      { name: 'b' },
      { name: 'c' }
      ]
  }
});

application.template.hbs

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

{{#each model as |m|}}
	{{my-component name=m.name}}
 {{/each}}
 
 <button {{action 'swapByShift'}}>Swap by Shift</button>
 
 <button {{action 'swapByReplace'}}>Swap by Replace</button>

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  didInsertElement() {
    this._super(...arguments);
    
    let name = this.get('name');
    console.log(`${name} was just inserted`);
  }
});

my-component.template.hbs

{{name}}

twiddle.json

{
  "version": "0.6.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "1.12.2",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.0/ember-data.js",
    "ember-template-compiler": "1.12.2"
  }
}