Closure actions to components

components.bottom-level.js

import Ember from 'ember';

export default Ember.Component.extend({
  click() {
    this.onTopLevel();
  }
});

components.mid-level.js

import Ember from 'ember';

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

components.top-level.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    onTopLevel() {
      console.log('I can be invoked directly from children when passed through using the (action \'actionName\') helper, because I\m a function reference. I skip the need for repeatedly calling sendAction at every component level.');
    }
  }
});

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}}

{{top-level}}
<br>
<br>

templates.components.bottom-level.hbs

{{yield}}

Bottom Level

templates.components.mid-level.hbs

{{yield}}

Mid Level

{{bottom-level onTopLevel=onTopLevel}}

templates.components.top-level.hbs

{{yield}}

Top Level

{{mid-level onTopLevel=(action "onTopLevel")}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}