file.js

uploadFile: function(file) {
  var self    = this,
      vehicle = this.get('controller.content'),
      photo   = Case.VehiclePhoto.createRecord();

  console.log(file.data);
  photo.set('name', file.name);
  photo.set('imageData', file.data);
  photo.set('vehicleId', this.get('controller.content.id'));

  photo.one('didCreate', this, function() {
    self.get('controller.content.photoQueue').removeObject(file);
  });

  photo.get('transaction').commit();
},