Démonstration ORM

Lemonade Blog

Un petit blog propulsé par Doctrine ORM et SQLite.

Doctrine ORM · SQLite · ManyToMany

Résultat ORM en direct

Derniers articles

1234 articles

Form errors that guide the next step — field note 1213

Good validation messages help people correct input quickly. This deterministic field note expands the demo dataset.

adam·
ValidationForms

Events for decoupled application work — field note 1214

Events publish facts without coupling every listener. This deterministic field note expands the demo dataset.

dominka·
ArchitectureEvents

Configuration with clear defaults — field note 1215

Typed configuration keeps environment choices visible. This deterministic field note expands the demo dataset.

johnny·
ConfigurationPHP

Testing a request boundary — field note 1216

Focused HTTP tests make middleware changes safer. This deterministic field note expands the demo dataset.

mira·
HTTPMiddlewareTesting

Performance budgets for web pages — field note 1217

Measure the work that affects a real response. This deterministic field note expands the demo dataset.

viktor·
CachePerformance

Secure headers as shared policy — field note 1218

Centralize defensive HTTP headers in middleware. This deterministic field note expands the demo dataset.

luky·
SecurityHTTPMiddleware

Filesystem paths owned by the app — field note 1219

Keep generated files under storage instead of source directories. This deterministic field note expands the demo dataset.

marek·
ConfigurationFilesystem

A practical routing convention — field note 1220

Named routes make links resilient as an application grows. This deterministic field note expands the demo dataset.

adam·
ArchitectureRouting

Repository queries with Doctrine — field note 1221

Repositories keep ORM query intent close to the model. This deterministic field note expands the demo dataset.

johnny , mira·
DatabaseDoctrine

Transactions around one connection — field note 1222

Do not assume separate database connections share atomic work. This deterministic field note expands the demo dataset.

johnny , viktor·
DatabaseSecurityArchitecture

API validation before serialization — field note 1223

A clear boundary keeps response payloads predictable. This deterministic field note expands the demo dataset.

johnny , luky·
ValidationAPIHTTP

Scheduled CLI work with a lock — field note 1224

A lock prevents overlapping maintenance commands. This deterministic field note expands the demo dataset.

johnny , marek·
PerformanceCLI
Comment fonctionne ce blog

L’intégration de Doctrine ORM dans cet exemple

Le flux du blog paginé lit les ID de la page avec toIterable(); un lot graphique borné charge ensuite les auteurs et les tags sans requêtes N+1.

Configuration du provider

DoctrineServiceProvider.php

Enregistre Doctrine comme un service applicatif standard via un provider Lemonade.

DoctrineServiceProvider.php
PHP
<?php

declare(strict_types=1);

namespace App\Providers;

use App\Repository\OrmDemoArticleRepository;
use App\Repository\OrmDemoAuthorRepository;
use App\Repository\OrmDemoTagRepository;
use App\Services\DoctrineEntityManagerFactory;
use App\Services\OrmDemoService;
use Doctrine\ORM\EntityManagerInterface;
use Lemonade\Framework\Container\ContainerInterface;
use Lemonade\Framework\Core\ServiceProviderInterface;

final class DoctrineServiceProvider implements ServiceProviderInterface
{
    public function register(ContainerInterface $container): void
    {
        $container->singleton(DoctrineEntityManagerFactory::class, DoctrineEntityManagerFactory::class);
        $container->singleton(
            EntityManagerInterface::class,
            static fn (ContainerInterface $container): EntityManagerInterface => $container
                ->get(DoctrineEntityManagerFactory::class)
                ->create(),
        );
        $container->set(OrmDemoArticleRepository::class, OrmDemoArticleRepository::class);
        $container->set(OrmDemoTagRepository::class, OrmDemoTagRepository::class);
        $container->set(OrmDemoAuthorRepository::class, OrmDemoAuthorRepository::class);
        $container->singleton(OrmDemoService::class, OrmDemoService::class);
    }
}
Entité Article

OrmDemoArticle.php

Mappe plusieurs auteurs et plusieurs tags avec des associations ManyToMany.

OrmDemoArticle.php
PHP
<?php

declare(strict_types=1);

namespace App\Entity;

use DateTimeImmutable;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use InvalidArgumentException;

#[ORM\Entity]
#[ORM\Table(name: 'orm_demo_articles')]
final class OrmDemoArticle
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column(type: 'integer')]
    private ?int $id = null;

    #[ORM\Column(type: 'string', length: 255)]
    private string $title;

    #[ORM\Column(type: 'text')]
    private string $perex;

    /** @var Collection<int, OrmDemoAuthor> */
    #[ORM\ManyToMany(targetEntity: OrmDemoAuthor::class, inversedBy: 'articles', cascade: ['persist'])]
    #[ORM\JoinTable(name: 'orm_demo_article_authors')]
    private Collection $authors;

    #[ORM\Column(type: 'datetime_immutable')]
    private DateTimeImmutable $createdAt;

    /** @var Collection<int, OrmDemoTag> */
    #[ORM\ManyToMany(targetEntity: OrmDemoTag::class, inversedBy: 'articles', cascade: ['persist'])]
    #[ORM\JoinTable(name: 'orm_demo_article_tags')]
    private Collection $tags;

    /**
     * @param non-empty-list<OrmDemoAuthor> $authors
     */
    public function __construct(string $title, string $perex, array $authors, DateTimeImmutable $createdAt)
    {
        if ($authors === []) {
            throw new InvalidArgumentException('An ORM demo article must have at least one author.');
        }

        $this->title = $title;
        $this->perex = $perex;
        $this->createdAt = $createdAt;
        $this->authors = new ArrayCollection();
        $this->tags = new ArrayCollection();

        foreach ($authors as $author) {
            $this->addAuthor($author);
        }
    }

    public function id(): ?int
    {
        return $this->id;
    }

    public function title(): string
    {
        return $this->title;
    }

    public function perex(): string
    {
        return $this->perex;
    }

    /** @return list<OrmDemoAuthor> */
    public function authors(): array
    {
        return $this->authors->toArray();
    }

    public function addAuthor(OrmDemoAuthor $author): void
    {
        if (!$this->authors->contains($author)) {
            $this->authors->add($author);
        }
    }

    public function createdAt(): DateTimeImmutable
    {
        return $this->createdAt;
    }

    /** @return Collection<int, OrmDemoTag> */
    public function tags(): Collection
    {
        return $this->tags;
    }

    public function addTag(OrmDemoTag $tag): void
    {
        if (!$this->tags->contains($tag)) {
            $this->tags->add($tag);
        }
    }
}
Entité Author

OrmDemoAuthor.php

Les auteurs sont des entités distinctes identifiées par un nickname unique.

OrmDemoAuthor.php
PHP
<?php
declare(strict_types=1);

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity]
#[ORM\Table(name: 'orm_demo_authors')]
final class OrmDemoAuthor
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column(type: 'integer')]
    private ?int $id = null;

    #[ORM\Column(type: 'string', length: 80, unique: true)]
    private string $nickname;

    /** @var Collection<int, OrmDemoArticle> */
    #[ORM\ManyToMany(targetEntity: OrmDemoArticle::class, mappedBy: 'authors')]
    private Collection $articles;

    public function __construct(string $nickname)
    {
        $this->nickname = $nickname;
        $this->articles = new ArrayCollection();
    }

    public function id(): ?int
    {
        return $this->id;
    }

    public function nickname(): string
    {
        return $this->nickname;
    }
}
Entité Tag

OrmDemoTag.php

Les tags sont des entités partagées reliées aux articles par une table de jointure.

OrmDemoTag.php
PHP
<?php

declare(strict_types=1);

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity]
#[ORM\Table(name: 'orm_demo_tags')]
final class OrmDemoTag
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column(type: 'integer')]
    private ?int $id = null;

    #[ORM\Column(type: 'string', length: 80)]
    private string $name;

    #[ORM\Column(type: 'string', length: 80, unique: true)]
    private string $slug;

    /** @var Collection<int, OrmDemoArticle> */
    #[ORM\ManyToMany(targetEntity: OrmDemoArticle::class, mappedBy: 'tags')]
    private Collection $articles;

    public function __construct(string $name, string $slug)
    {
        $this->name = $name;
        $this->slug = $slug;
        $this->articles = new ArrayCollection();
    }

    public function id(): ?int
    {
        return $this->id;
    }

    public function name(): string
    {
        return $this->name;
    }

    public function slug(): string
    {
        return $this->slug;
    }
}
Repository et pagination

OrmDemoArticleRepository.php

Combine des filtres facultatifs avec une pagination SQL et évite les requêtes N+1.

OrmDemoArticleRepository.php
PHP
<?php

declare(strict_types=1);

namespace App\Repository;

use App\Entity\OrmDemoArticle;
use App\Services\DoctrineEntityManagerFactory;
use Doctrine\ORM\EntityManagerInterface;

final class OrmDemoArticleRepository
{
    private const GRAPH_BATCH_SIZE = 25;

    public function __construct(private readonly DoctrineEntityManagerFactory $entityManagerFactory)
    {
    }

    public function paginate(int $page, int $perPage, ?string $tag = null, ?string $author = null): OrmDemoArticlePage
    {
        $perPage = max(1, $perPage);
        $count = $this->entityManager()
            ->createQueryBuilder()
            ->select('COUNT(DISTINCT article.id)')
            ->from(OrmDemoArticle::class, 'article');

        if ($tag !== null) {
            $count
                ->innerJoin('article.tags', 'tag')
                ->andWhere('tag.slug = :tag')
                ->setParameter('tag', $tag);
        }

        if ($author !== null) {
            $count
                ->innerJoin('article.authors', 'author')
                ->andWhere('author.nickname = :author')
                ->setParameter('author', $author);
        }

        $total = (int) $count->getQuery()->getSingleScalarResult();
        $page = min(max(1, $page), max(1, (int) ceil($total / $perPage)));

        $idsQuery = $this->entityManager()
            ->createQueryBuilder()
            ->select('DISTINCT article.id AS id')
            ->from(OrmDemoArticle::class, 'article');
        if ($tag !== null) {
            $idsQuery
                ->innerJoin('article.tags', 'tag')
                ->andWhere('tag.slug = :tag')
                ->setParameter('tag', $tag);
        }

        if ($author !== null) {
            $idsQuery
                ->innerJoin('article.authors', 'author')
                ->andWhere('author.nickname = :author')
                ->setParameter('author', $author);
        }

        $idsQuery
            ->orderBy('article.createdAt', 'DESC')
            ->addOrderBy('article.id', 'DESC')
            ->setFirstResult(($page - 1) * $perPage)
            ->setMaxResults($perPage);

        $articles = (function () use ($idsQuery): iterable {
            $entityManager = $this->entityManager();
            $ids = [];

            foreach ($idsQuery->getQuery()->toIterable() as $row) {
                $ids[] = (int) $row['id'];

                if (count($ids) === self::GRAPH_BATCH_SIZE) {
                    yield from $this->fetchGraphBatch($entityManager, $ids);
                    $ids = [];
                    $entityManager->clear();
                }
            }

            if ($ids !== []) {
                yield from $this->fetchGraphBatch($entityManager, $ids);
                $entityManager->clear();
            }
        })();

        return new OrmDemoArticlePage($articles, $total, $page);
    }

    /** @param list<int> $ids @return iterable<OrmDemoArticle> */
    private function fetchGraphBatch(EntityManagerInterface $entityManager, array $ids): iterable
    {
        /** @var list<OrmDemoArticle> $fetched */
        $fetched = $entityManager->createQueryBuilder()
            ->select('article, author, tag')
            ->from(OrmDemoArticle::class, 'article')
            ->leftJoin('article.authors', 'author')
            ->leftJoin('article.tags', 'tag')
            ->where('article.id IN (:ids)')
            ->setParameter('ids', $ids)
            ->getQuery()
            ->getResult();
        $byId = [];

        foreach ($fetched as $article) {
            $byId[$article->id() ?? 0] = $article;
        }

        foreach ($ids as $id) {
            if (isset($byId[$id])) {
                yield $byId[$id];
            }
        }
    }

    public function hasArticles(): bool
    {
        return $this->entityManager()->getRepository(OrmDemoArticle::class)->count([]) > 0;
    }

    public function add(OrmDemoArticle $article): void
    {
        $this->entityManager()->persist($article);
        $this->entityManager()->flush();
    }

    /** @param iterable<OrmDemoArticle> $articles */
    public function addAll(iterable $articles, int $batchSize): void
    {
        $entityManager = $this->entityManager();
        $processed = 0;

        $batchSize = max(1, $batchSize);

        foreach ($articles as $article) {
            $entityManager->persist($article);
            ++$processed;

            if ($processed % $batchSize === 0) {
                $entityManager->flush();
            }
        }

        $entityManager->flush();
    }

    private function entityManager(): EntityManagerInterface
    {
        return $this->entityManagerFactory->create();
    }
}

Fonctionnement du filtrage

Les articles peuvent avoir plusieurs auteurs et plusieurs tags. Les deux associations sont mappées dans Doctrine ORM comme ManyToMany. Lors du filtrage par auteur, Doctrine relie les articles via la table de jointure orm_demo_article_authors et les sélectionne selon author.nickname. Lors du filtrage par tag, il utilise la table de jointure orm_demo_article_tags avec une condition sur tag.slug. Les deux filtres peuvent être combinés.