gregtap · October 27, 2015 00:56
diff --git a/components.nav-bar.js b/components.nav-bar.js
 import Ember from 'ember';

 export default Ember.Component.extend({
  tagName: 'nav',

  isMenuVisible: false,

  actions: {
    toggleMenu: function() {
      this.toggleProperty('isMenuVisible');
    },
  },
 });
diff --git a/gistfile1.txt b/gistfile1.txt
 A helper named 'bind-attr' could not be found
diff --git a/templates.components.nav-bar.hbs b/templates.components.nav-bar.hbs
 <div class="menu {{bind-attr class="isMenuVisible"}}">
    <h3>I am a menu</h3>
 </div>

 <button class="hamburger" {{action "toggleMenu"}}>
  <span>toggle menu</span>
 </button>
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