Added book search.

src/Repository/BookRepository.php

@@ -39,20 +39,18 @@ class BookRepository extends ServiceEntityRepository
         }
     }
 
-//    /**
-//     * @return Book[] Returns an array of Book objects
-//     */
-//    public function findByExampleField($value): array
-//    {
-//        return $this->createQueryBuilder('b')
-//            ->andWhere('b.exampleField = :val')
-//            ->setParameter('val', $value)
-//            ->orderBy('b.id', 'ASC')
-//            ->setMaxResults(10)
-//            ->getQuery()
-//            ->getResult()
-//        ;
-//    }
+    /**
+     * @return Book[] Returns an array of Book objects
+     */
+    public function findByTitle($value): array
+    {
+        return $this->createQueryBuilder('b')
+            ->andWhere('LOWER(b.title) LIKE :title')
+            ->setParameter('title', '%' . strtolower($value) . '%')
+            ->orderBy('b.id', 'ASC')
+            ->getQuery()
+            ->getResult();
+    }
 
 //    public function findOneBySomeField($value): ?Book
 //    {