小编Mar*_*rio的帖子

有人可以用Symfony序列化器序列化来自多个类的数据时，如何解释我如何使用多个标准化器？

可以说我有以下课程：

class User
{
    private $name;
    private $books;

    public function __construct()
    {
        $this->books = new ArrayCollection();
    }

    // getters and setters
}

class Book
{
    private $title;

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

    public function setTitle($title)
    {
        $this->title = $title;
    }
}

我想序列化拥有多本书的用户。

$first = new Book();
$first->setTitle('First book');

$second = new Book();
$second->setTitle('Second book');

$user = new User();
$user->setName('Person name');
$user->addBook($first);
$user->addBook($second);

dump($this->get('serializer')->serialize($user, 'json'));
die();

假设我还想在对书籍进行序列化时包含哈希，因此我有以下规范化器：

class BookNormalizer implements NormalizerInterface
{
    public function normalize($object, $format = null, …