Action Helper

application.controller.js

import Ember from 'ember';

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

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{#my-parent as |propOnly closed|}}
  {{my-child prop=propOnly closed=closed}}
{{/my-parent}}

my-child.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
   propOnly() {
     this.getAttr('prop')();
   },
   closed() {
     this.getAttr('closed')();
   }
  }
});

my-child.template.hbs

<button {{action 'propOnly'}}>Prop Only</button>
<button {{action 'closed'}}>Closed Function</button>

my-parent.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  componentName: 'Parent.',
  speak() {
    if(this) {
    	alert(this.get('componentName'));
    } else {
      alert('No `this` context!');
    }
  }
});

my-parent.template.hbs

{{yield speak (action speak)}}

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.1.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember-template-compiler.js"
  }
}