fileupload.js

Case.UploadFileView = Ember.TextField.extend({
    type: 'file',
    attributeBindings: ['name', 'multiple'],
    change: function(evt) {
      var self = this;
      var input = evt.target;
      if (input.files && input.files[0]) {
        for(var i = 0; i < input.files.length; ++i) {
          var reader = new FileReader();
          var that = this;
          reader.onload = function(e) {
            var fileToUpload  = e.srcElement.result,
                fileArrayName = self.get('name'),
                fileArray     = self.get('controller').get(fileArrayName);
            fileArray.pushObject(fileToUpload);
            self.get('controller').set(fileArrayName, fileArray);
          }
          reader.readAsDataURL(input.files[i]);
        }
      }
    }
});

photos.handlebars

{{view Case.UploadFileView name="photoQueue" multiple="multiple"}}

{{#each photo in photoQueue}}
  <span>{{photo}}</span>
{{/each}}

vehicle_photos_controller.js

Case.VehiclePhotosController = Ember.ObjectController.extend({
  photoQueue: Ember.A(),
  photoQueueSorted: function() {
    console.log(this.get('photoQueue'));
    return this.get('photoQueue').filter(function(photo) {return true;});
  }.property('photoQueue.@each'),
})