ember enumerables

components.AModel.js

import Ember from 'ember';

export default Ember.Object.extend({
	name: 'abb'
});

components.another-component.js

import Ember from 'ember';
import A from './AModel';

export default Ember.Component.extend({
  
  value1: Ember.computed.oneWay('value'),
  arr: [],
  
  actions: {
  	addObjectInArr() {
    	this.get('arr').pushObject(A.create({
      	name: 'a'
      }));
    }
  }
});

components.my-component.js

import Ember from 'ember';
import A from './AModel';
import computed from 'ember-computed';
import set from 'ember-metal/set';
import get from 'ember-metal/get';

export default Ember.Component.extend({
  
  value: '',
  arr: computed(() => []),
  arrx: computed(() => []),
  
  actions: {
  	addObjectToArr() {
    	get(this, 'arr').pushObject(A.create({
      	name: 'a'
      }));
    },
    
    addPrimitivesToArr() {
    	get(this, 'arrx').pushObject('sss');
    },
    
    changeValue() {
    	set(this, 'value', get(this, 'value') + 's');
    }
    
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  abc: '123'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{my-component}}
{{my-component}}
{{another-component}}
{{outlet}}
<br>
<br>

templates.components.another-component.hbs

another-component <br/> arrlen: {{arr.length}}
<button {{action "addObjectInArr"}}>addObjectInArr</button>
<br/>
<br/>

templates.components.my-component.hbs

my-component <br/>
arrlen: {{arr.length}}
<button {{action "addObjectToArr"}}>addObjectToArr</button>
<br/>
arrxlen: {{arrx.length}}
<button {{action "addPrimitivesToArr"}}>addPrimitivesToArr</button>
<br/>
value: {{value}}
<button {{action "changeValue"}}>changeValue</button>
<br/>
<br/>

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {}
}