]);
$book = Book::visible()->where('slug', '=', $bookSlug)->firstOrFail();
$this->checkOwnablePermission('chapter-create', $book);
$chapter = $this->chapterRepo->create($request->all(), $book);
]);
$book = Book::visible()->where('slug', '=', $bookSlug)->firstOrFail();
$this->checkOwnablePermission('chapter-create', $book);
$chapter = $this->chapterRepo->create($request->all(), $book);