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<?php
namespace App\Repository;
use App\Entity\Book;
use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
use Doctrine\Persistence\ManagerRegistry;
/**
* @extends ServiceEntityRepository<Book>
*/
class BookRepository extends ServiceEntityRepository
{
public function __construct(ManagerRegistry $registry)
parent::__construct($registry, Book::class);
}
* Find a book by ISBN.
*
* @param string $isbn ISBN of the book to find
* @return Book|null Returns a Book object or null if not found
public function findByIsbn(string $isbn): ?Book
return $this->createQueryBuilder('b')
->andWhere('b.isbn = :isbn')
->setParameter('isbn', $isbn)
->getQuery()
->getOneOrNullResult()
;
// /**
// * @return Book[] Returns an array of Book objects
// */
// public function findByExampleField($value): array
// {
// return $this->createQueryBuilder('b')
// ->andWhere('b.exampleField = :val')
// ->setParameter('val', $value)
// ->orderBy('b.id', 'ASC')
// ->setMaxResults(10)
// ->getQuery()
// ->getResult()
// ;
// }
// public function findOneBySomeField($value): ?Book
// ->getOneOrNullResult()
Pbris /
mvc1
