Symfony 4.取消注册ObjectNormalizer

Question

我希望我的序列化过程是显式的，不使用对象/属性规格化程序，我如何注销它们？

http://symfony.com/doc/current/components/serializer.html#normalizers

Answer 1

我找到了一种在Kernel::build中添加编译器通道的方法

class Kernel extends BaseKernel
{
    // ...

    protected function build(ContainerBuilder $container)
    {
        $container->addCompilerPass(new class implements CompilerPassInterface
        {
            public function process(ContainerBuilder $container)
            {
                $container->removeDefinition('serializer.normalizer.json_serializable');
                $container->removeDefinition('serializer.normalizer.object');
            }
        }, PassConfig::TYPE_BEFORE_OPTIMIZATION, 1);
    }
}

优先级=1使其在SerializerPass之前运行，因此它可以工作。

更新：@Nek的建议是在framework配置中禁用序列化程序，然后自己注册它似乎是一个好主意。

Answer 2

如果您希望您的序列化过程是显式的，您可以在服务definition中注册您自己的规范器，如下所示

AppBundle\Serializer\Your\MyObjectNormalizer:
    tags:
        - { name: serializer.normalizer }

您可以像下面这样声明一个规范化程序

namespace AppBundle\Serializer\Your; 
use Symfony\Component\Serializer\Normalizer\NormalizerInterface;

class MyObjectNormalizer implements NormalizerInterface
    {
    public function normalize($object, $format = null, array $context = [])
    {
        // $object is an instance of MyObject
        $groups = array_key_exists('groups', $context) ? $context['groups'] : [];

        $data = [
            'name' => $object->getName()
            // ..........
        ];
        if(array_key_exists('full', $groups)) {
            $data['owner'] = $object->getOwner()->getFullName();
        }
        return $data;
    }

    /**
     * Checks whether the given class is supported for normalization by this normalizer.
     *
     * @param mixed  $data   Data to normalize
     * @param string $format The format being (de-)serialized from or into
     *
     * @return bool
     */
    public function supportsNormalization($data, $format = null)
    {
        return $data instanceof MyObject;
    }
}

如果你像这样处理，Symfony会看到你为这类对象声明了一个自定义的规格化器。所以他会把你的课放在第一位让MyObject正常化

您可以标准化上下文数组中的数据

$myobject = new MyObject();

$fullObj = $this->container->get('serializer')->serialize($myobject, 'json', ['full']);

$lightObj = $this->container->get('serializer')->serialize($myobject, 'json');
// $fullObj is ['name' => 'someName', 'owner' => 'ownerName'];
// $lightObj is ['name' => 'someName'];

看一下documentation的这一部分