findby helper

controllers.application.js

import Ember from 'ember';
import DS from 'ember-data';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  foo: Ember.computed('promise', {
    get() {
      return DS.PromiseArray.create({
        promise: Ember.RSVP.resolve([
      Ember.Object.create({ id: 1, name: "Larry" }),
      Ember.Object.create({ id: 2, name: "Curly" }),
      Ember.Object.create({ id: 3, name: "Moe" }),
    ])
      });
    }
  })
});

helpers.findby.js

import Ember from 'ember';

const { typeOf } = Ember;

export function findby([array, key, value]) {
 	return array.findBy(key, value) || null;
}

export default Ember.Helper.helper(findby);

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{log (findby foo "id" 2)}}
<br>
<br>

twiddle.json

{
  "version": "0.7.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/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/2.4.3/ember-template-compiler.js"
  }
}