public function saveFromGoogle()
 {
     $id = $this->getRequest()->getParams()->get('book_id', null);
     $gbook = BookRequest::get($id);
     try {
         $book = Product::createFromGoogleBook($gbook);
         $this->respondTo('html', function () use($book) {
             $this->getResponse()->redirect('App\\Admin\\Controllers\\ProductController', 'show', [$book->id]);
         });
     } catch (ValidationException $e) {
         $this->respondTo('html', function () use($book) {
             $this->getResponse()->redirect('App\\Admin\\Controllers\\ProductController', 'searchGoogleBook');
         });
     }
 }