filter-by (plain)

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  arrayItems: [
    {
     name: "One"
    },
    {
     name: "Two"
    },
    {
     name: "Three"
    }
  ]
});

helpers.filter-by.js

import Ember from 'ember';

export function filterBy([array, key = '', value = '']) {
  array = array || [];
  
  value = value.trim();
  key = key.trim();
  
  if (Em.isEmpty(value) || Em.isEmpty(key)) {
    return array;
  } else {
    return array.filter(item => Em.get(item, key).indexOf(value) !== -1);
  }
}

export default Ember.Helper.helper(filterBy);

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{input value=value}}
<ol>
{{#each (filter-by arrayItems 'name' value) as |item|}}
  <li>{{item.name}}</li>
{{/each}}
</ol>
<br>
<br>

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"
  }
}