broadcast

components.level-one.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    ohai(val) {
      console.log(`on ${this.constructor.toString()} recieved: ${val}`);
      return true;
    }
  }
});

components.level-three.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    test() {
      console.log(`on ${this.constructor.toString()} broadcasting: 2`);
      this.send('ohai', 2);
    }
  }
});

components.level-two.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    ohai(val) {
      console.log(`on ${this.constructor.toString()} recieved: ${val}`);
      return true;
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
    ohai(val) {
      console.log(`on ${this.constructor.toString()} recieved: ${val}`);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{level-one}}
{{outlet}}
<br>
<br>

templates.components.level-one.hbs

{{level-two}}

templates.components.level-three.hbs

<button {{action 'test'}}>Broadcast</button>

templates.components.level-two.hbs

{{level-three}}

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}