public function getVerseText($bookName, $chapter, $verse)
 {
     $words = $this->getChapterText(Book::find($bookName)->konyv_id, $chapter);
     $words = $words->filter(function ($word) use($verse) {
         return $word->verse == $verse;
     });
     return Response::json($words->values());
 }
 /**
  * @param Request $request
  * @param $bookId
  */
 public function unBorrow(Request $request, $bookId)
 {
     $book = Book::find($bookId);
     $book->user()->dissociate();
     $book->taken_at = null;
     $book->save();
     Session::flash('info', 'Successfully');
     return Redirect::to(route('book.index'));
 }