Child calls Parent

components.the-child.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    callParent() {
      this.sendAction('callParent', this.get('name'));
    }
  }
});

components.the-parent.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    callParent(childName) {
    	this.set(childName);
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{#the-parent as |callParent|}}
  {{the-child callParent=callParent name="bob"}}
  {{the-child callParent=callParent name="jim"}}
{{/the-parent}}
<br>
<br>

templates.components.the-child.hbs

<button onClick={{action "callParent"}}>Send to Parent {{name}}</button>

templates.components.the-parent.hbs

{{yield (action 'callParent')}}

{{#if childName}}
  {{childName}} called me
{{/if}}

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0"
  },
  "addons": {}
}