test iterate object and change value

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  thing: {
  	'first-name': 'Aaron',
    'hello_last-name': '',
    'status': '',
  },
  
  output: Ember.computed('thing.{first-name,last-name,status}', {
    get() {
      return JSON.stringify(this.get('thing'), null, 2);
    }
  }),
  
  actions: {
    save() {
      console.log('thing', this.get('thing'));
    },
    
    updateThing(key, evt) {
      let value = evt.target.value;
      this.set(`thing.${key}`, value);
    }
  },
});

templates.application.hbs

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

{{#each-in thing as |key value|}}
	<div>
    <label>{{key}}</label>
    {{input type="text" value=value input=(action "updateThing" key)}}
    {{value}}
  </div>
{{/each-in}}

<a {{action "save"}}>Save</a>

<br>
<pre><code>
{{output}}
</code></pre>

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}