Ember handlebars helper to avoid multiple metamorph tags inside an each block

group-render.js

import Ember from 'ember';

/**
 * Ember handlebars group helper
 *
 * This helper will solve most of problems refering to metamorph
 * tags inside a each block. You should use it when you don't need the two-way 
 * data binding inside your loop.
 *
 * Adapted from: https://github.com/emberjs/group-helper
 * To works with ember-cli the filename should have a hyphen ('group-render')
 */

var get = Ember.get, set = Ember.set;

export default function(options) {
  var data = options.data,
      fn   = options.fn,
      view = data.view,
      childView;

  childView = view.createChildView(Ember._MetamorphView, {
    context: get(view, 'context'),

    template: function(context, options) {
      options.data.insideGroup = true;
      return fn(context, options);
    }
  });

  view.appendChild(childView);
};