http://stackoverflow.com/questions/41589349/ember-nested-components-in-template-how-to-reference-parent-component-for-clos

components.campaign-panel-group.js

import Ember from 'ember';

export default Ember.Component.extend({
  group:'group',
  actions:{
    closePanels(){
      console.log('closePanels in campaign-panel-group');
    }
  }
});

components.campaign-panel-wrapper.js

import Ember from 'ember';

export default Ember.Component.extend({
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  actions:{
    closePanels(){
      console.log('closePanels in application');
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{#campaign-panel-group as | closePanels |  }}
	{{log 'closePanels in app hbs' closePanels}}
    {{campaign-panel-wrapper
        closeOtherPanels=closePanels
    }}
{{/campaign-panel-group}}
<br>
{{outlet}}
<br>
<br>

templates.components.campaign-panel-group.hbs

{{yield (action 'closePanels')}}

templates.components.campaign-panel-wrapper.hbs

<button {{action closeOtherPanels}}>campaign-panel-wrapper</button>
{{yield}}

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": {}
}