$book = $this->bookRepo->getBySlug($bookSlug);
$this->checkOwnablePermission('book-delete', $book);
$this->setPageTitle(trans('entities.books_delete_named', ['bookName' => $book->getShortName()]));
$book = $this->bookRepo->getBySlug($bookSlug);
$this->checkOwnablePermission('book-delete', $book);
$this->setPageTitle(trans('entities.books_delete_named', ['bookName' => $book->getShortName()]));