public function createNew()
 {
     // Get gallery item
     $galleryItem = parent::createNew();
     $galleryId = $this->getRequest()->get('gallery_id');
     $galleryRepository = $this->container->get('symedit.repository.image_gallery');
     $gallery = $galleryRepository->find($galleryId);
     if (!$gallery) {
         throw $this->createNotFoundException('Gallery not found');
     }
     $galleryItem->setGallery($gallery);
     return $galleryItem;
 }