gistfile1.js

  itemView: SC.TemplateView.extend({
    templateName: 'navigation',

    submenu: SC.TemplateCollectionView.extend({
      contentBinding: '.parentView.content.menuItems',
      
      itemView: SC.TemplateView.extend({
        hash: '#!/',
        
        buttonPressed: function() {
          console.log(this.get('content'));
        },
        
        contentDidChange: function() {
          console.log(this.get('content'));
          this.set('hash', '#!/' + this.getPath('content.hash'));
        }.observes('content')
      })
    })
  }),