New Twiddle

components.my-component.js

import Ember from 'ember';

const {computed} = Ember;

export default Ember.Component.extend({
  tagName: 'a',
  
  _setupDropdown: Ember.on('didInsertElement', function() {
    this._super.apply(this, arguments);
    Ember.run.scheduleOnce('afterRender', this, function() {
      this.$().attr('data-activates', this.get('_dropdownContentId'));
	    this.$().dropdown();
    });
  }),
                           
  _dropdownContentId: Ember.computed('elementId', function(){
    console.log('I AM', this)
		return this.get('elementId') + '-dropdown';
  })
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

  <div class="navbar-fixed">
    <nav>
      <div class="nav-wrapper">
        <a class="brand-logo">Logo</a>
        <ul class="right">
        <li>{{#my-component text='Dropdown'}}
	<li><a href="#!">one</a></li>
	<li><a href="#!">two</a></li>
	<li class="divider"></li>
	<li><a href="#!">three</a></li>
{{/my-component}}</li>
          
        </ul>
      </div>
    </nav>
  </div>

<br>
{{#my-component text='Buttonless Dropdown'}}
	<li><a href="#!">NOT ONE</a></li>
	<li><a href="#!">NOT TWO</a></li>
	<li class="divider"></li>
	<li><a href="#!">NOT THREE</a></li>
{{/my-component}}

templates.components.my-component.hbs

{{text}}
<ul id="{{_dropdownContentId}}" class="dropdown-content">
  {{yield}}
</ul>

twiddle.json

{
  "version": "0.4.6",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.5/ember.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.5/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.5/ember-template-compiler.js",
    "materialize-css": "https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.0/css/materialize.min.css",
    "materialize-js": "https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.0/js/materialize.min.js"
  }
}