cities

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

controllers.cities.js

import Ember from 'ember';

export default Ember.Controller.extend({
  citySelected: Ember.computed('citySelectedCode', function() {
		return this.get('model.cities').findBy('code', this.get('citySelectedCode'));
	}),
  filteredCounties: Ember.computed('citySelectedCode', 'model.cities', function() {
		let citySelectedCode = Ember.get(this, 'citySelectedCode');
		let counties = Ember.get(this.model, 'counties');

		return (citySelectedCode) ? counties.filterBy('cityCode', citySelectedCode) : counties;
	}),
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('cities');
});

export default Router;

routes.cities.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    cities: [
    	{id: 1, code: '78', name: 'City 1'},
			{id: 2, code: '26', name: 'City 2'},
			{id: 3, code: '37', name: 'City 3'},
			{id: 4,	code: '48', name: 'City 4'},
			{id: 5, code: '60', name: 'City 5'},
			{id: 6, code: '64', name: 'City 6'}
    ]
  }
});

templates.application.hbs

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

templates.cities.hbs

<h2>Cities</h2>
{{#power-select
	selected=citySelected
	options=model.cities
	searchField="name"
	placeholder="Please select a city"
	onchange=(action (mut citySelectedCode) value="code")
	as |city|
	}}
	  {{city.code}} - {{city.name}}
{{/power-select}}

tests.helpers.destroy-app.js

import Ember from 'ember';

export default function destroyApp(application) {
  Ember.run(application, 'destroy');
}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}