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<?php |
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace App\Repository; |
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use App\Entity\Post; |
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use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository; |
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use Doctrine\Common\Persistence\ManagerRegistry; |
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use Doctrine\ORM\Query; |
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use Pagerfanta\Adapter\DoctrineORMAdapter; |
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use Pagerfanta\Pagerfanta; |
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/** |
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* This custom Doctrine repository contains some methods which are useful when |
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* querying for blog post information. |
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* |
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* See https://symfony.com/doc/current/book/doctrine.html#custom-repository-classes |
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* |
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* @author Ryan Weaver <[email protected]> |
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* @author Javier Eguiluz <[email protected]> |
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* @author Yonel Ceruto <[email protected]> |
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*/ |
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class PostRepository extends ServiceEntityRepository |
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{ |
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public function __construct(ManagerRegistry $registry) |
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{ |
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parent::__construct($registry, Post::class); |
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} |
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public function findLatest(int $page = 1): Pagerfanta |
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{ |
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$query = $this->getEntityManager() |
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->createQuery(' |
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SELECT p, a, t |
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FROM App:Post p |
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JOIN p.author a |
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LEFT JOIN p.tags t |
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WHERE p.publishedAt <= :now |
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ORDER BY p.publishedAt DESC |
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') |
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->setParameter('now', new \DateTime()) |
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; |
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return $this->createPaginator($query, $page); |
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} |
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private function createPaginator(Query $query, int $page): Pagerfanta |
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{ |
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$paginator = new Pagerfanta(new DoctrineORMAdapter($query)); |
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$paginator->setMaxPerPage(Post::NUM_ITEMS); |
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$paginator->setCurrentPage($page); |
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return $paginator; |
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} |
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/** |
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* @return Post[] |
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*/ |
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public function findBySearchQuery(string $rawQuery, int $limit = Post::NUM_ITEMS): array |
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{ |
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$query = $this->sanitizeSearchQuery($rawQuery); |
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$searchTerms = $this->extractSearchTerms($query); |
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if (0 === count($searchTerms)) { |
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return []; |
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} |
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$queryBuilder = $this->createQueryBuilder('p'); |
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foreach ($searchTerms as $key => $term) { |
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$queryBuilder |
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->orWhere('p.title LIKE :t_'.$key) |
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->setParameter('t_'.$key, '%'.$term.'%') |
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; |
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} |
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return $queryBuilder |
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->orderBy('p.publishedAt', 'DESC') |
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->setMaxResults($limit) |
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->getQuery() |
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->getResult(); |
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} |
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/** |
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* Removes all non-alphanumeric characters except whitespaces. |
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*/ |
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private function sanitizeSearchQuery(string $query): string |
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{ |
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return preg_replace('/[^[:alnum:] ]/', '', trim(preg_replace('/[[:space:]]+/', ' ', $query))); |
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} |
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/** |
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* Splits the search query into terms and removes the ones which are irrelevant. |
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*/ |
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private function extractSearchTerms(string $searchQuery): array |
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{ |
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$terms = array_unique(explode(' ', mb_strtolower($searchQuery))); |
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return array_filter($terms, function ($term) { |
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return 2 <= mb_strlen($term); |
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}); |
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} |
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} |
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hgraca /
explicit-architecture-php
