OOP — Traits

Traits — Code Reuse

trait Timestamps {
    private DateTime $createdAt;
    private DateTime $updatedAt;

    public function setCreated(): void {
        $this->createdAt = new DateTime();
        $this->updatedAt = new DateTime();
    }

    public function touch(): void {
        $this->updatedAt = new DateTime();
    }

    public function getCreated(): string {
        return $this->createdAt->format("Y-m-d H:i:s");
    }
}

trait SoftDelete {
    private ?DateTime $deletedAt = null;

    public function delete(): void {
        $this->deletedAt = new DateTime();
    }

    public function isDeleted(): bool {
        return $this->deletedAt !== null;
    }
}

class Post {
    use Timestamps, SoftDelete;

    public function __construct(public string $title) {
        $this->setCreated();
    }
}

$post = new Post("Hello World");
echo $post->getCreated();