New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  cities: ['Barcelona', 'London', 'New York', 'Porto'],
  destination: 'London',
      actions: {
        chooseDestination(city) {
          this.set('destination', city);
          // this.calculateRoute();
          // this.updatePrice();
        }
      }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
    {{#power-select
      selected=destination
      options=cities
      onchange=(action "chooseDestination")
      as |name|
    }}
      {{name}}
    {{/power-select}}
<br>
<br>

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {
    "ember-power-select": "1.0.0-beta.20"
  }
}