fire_action

components.my-component-2.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    fire: function() {
      alert('fire from component 2')
      this.sendAction()
    }
  }
});

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    setFire() {
      alert('setFire action in component 1')
      this.sendAction()
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none'
});

Router.map(function() {
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
   setFire() {
     alert('fire from application!'); 
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{my-component action="setFire"}}

templates.components.my-component-2.hbs

{{yield}}
<button {{action "fire"}}>Fire!</button> Fire! Fire! Fire!

templates.components.my-component.hbs

{{yield}}
{{my-component-2 action="setFire"}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}