Classic Actions vs Closure Actions

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
   	classicToggle() {
      this.log('outer classic toggle');
      this.sendAction('classicToggle');
    }
  },
  
  attributeBindings: 'style:style',
  style: 'background-color: lightgreen; color: purple;',
  log(message) {
    console.log(`%c ${message}`, 'background: lightgreen; color: purple');
  },
});

components.my-inner-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  toggle: () => { return 'default from inner component'; },
  actions: {
   	classicToggle() {
      this.log('inner classic toggle');
      this.sendAction('classicToggle');
    },
    closureToggle() {
      this.log('inner closure toggle');
      let returnValue = this.get('toggle')();
      console.log('return value', returnValue);
    }
  },
  
  
  attributeBindings: 'style:style',
  style: 'background-color: yellow; color: blue;',
  log(message) {
    console.log(`%c ${message}`, 'background: yellow; color: blue');
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  actions: {
   classicToggle() {
     this.log('application classic toggle', this);
   },
   toggle() {
     this.log('application closure toggle', this); 
     return 142857; 
   }
  },
  
  log(message) {
    console.log(`%c ${message}`, 'background: cornflowerblue; color: white');
  },
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.ember-view {
  border: 1px solid green;
  padding: 10px;
  margin-top: 10px;
  margin-bottom: 10px;
}

templates.application.hbs

<div style="background-color: cornflowerblue; color: white; padding: 10px">
	<h2>Classic vs Closure Actions</h2>

	{{my-component 
		classicToggle='classicToggle' 
  	toggle=(action 'toggle')
	}}
</div>

templates.components.my-component.hbs

<h3>Outer component</h3>

<button {{action 'classicToggle'}}>Classic Toggle</button>

<button onclick={{action toggle}}>Closure Toggle</button>

{{my-inner-component 
	classicToggle='classicToggle'
  toggle=toggle
}}

templates.components.my-inner-component.hbs

<h3>Inner component</h3>

<button {{action 'classicToggle'}}>Classic Toggle</button>

<button onclick={{action 'closureToggle'}}>Closure Toggle</button>

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}