Using Enums with PHP 8.1
Doctrine ORM 2.11 introduced support for PHP 8.1 enums. To make use of backed enums with doctrine-laminas-hydrator, you need to set up a hydration strategy.
The Enum and Entity
The following example uses a card with an enum representing hearts, diamonds, clubs or spades:
enum Suit: string { case Hearts = 'H'; case Diamonds = 'D'; case Clubs = 'C'; case Spades = 'S';}#[Entity]class Card{ /** ... */ #[Column(type: 'string', enumType: Suit::class)] public Suit $suit; public function getSuit(): Suit { return $this->suit; } public function setSuit(Suit $suit): void { $this->suit = $suit; }}Custom Hydration Strategy
Next, you need to create a hydration strategy for your backed enum:
namespace Application\Hydrator\Strategy;use Laminas\Hydrator\Strategy\StrategyInterface;class SuitHydratorStrategy implements StrategyInterface{ public function extract($value, ?object $object = null): ?int { return null === $value ? null : Suit::tryFrom($value)->value; } public function hydrate($value, ?array $data): ?Suit { return null === $value ? null : Suit::tryFrom($value); }}Usage Example
Once you have enum, entity and strategy set up, you can wire it all together by adding the strategy to the relevant field in your hydrator.
$hydrator = new DoctrineHydrator($entityManager);$hydrator->addStrategy('suit', new \Application\Hydrator\Strategy\SuitHydratorStrategy());$card = new Card();$hydrator->hydrate([ 'suit' => 'H' ], $card);