Php 如何使用定制的StateProvider设置JsonLd@上下文

您可以try 创建一个custom normalizer来修改序列化过程，并确保@context、@id和@type的设置符合您的要求.

namespace App\Serializer;

use Symfony\Component\Serializer\Normalizer\ContextAwareNormalizerInterface;
use Symfony\Component\Serializer\Normalizer\NormalizerInterface;

class TransitionNormalizer implements ContextAwareNormalizerInterface
{
    private $decorated;

    public function __construct(NormalizerInterface $decorated)
    {
        $this->decorated = $decorated;
    }

    public function normalize($object, string $format = null, array $context = [])
    {
        $data = $this->decorated->normalize($object, $format, $context);
        $data['@context'] = '/contexts/Transition';
        $data['@id'] = '/transitions/' . $object->id;
        $data['@type'] = 'https://schema.org/UpdateAction';

        return $data;
    }

    public function supportsNormalization($data, string $format = null, array $context = []): bool
    {
        return $data instanceof Transition;
    }
}

将自定义规范化器as a service和tag it定义为serializer.normalizer.这将确保它是在Symfony Serializer component注册.

# config/services.yaml
services:
    App\Serializer\TransitionNormalizer:
        decorates: 'serializer.normalizer.object'
        tags: ['serializer.normalizer']

并更新Transition类上的ApiResource annotation以利用自定义规范化器.

#[ApiResource(
    types: 'https://schema.org/UpdateAction',
    provider: TransitionStateProvider::class,
    normalizationContext: ['groups' => ['transition']]
)]
class Transition
{
    #[ApiProperty(
        identifier: true,
        types: ['https://schema.org/identifier'],
    )]
    public int $id;
}

你得到的工作流程:

+---------------+     +----------------------+     +-----------------------+     +-------------------+
| API Resource  |     | Custom Normalizer    |     |   Service Definition  |     | Desired JSON-LD   |
| Transition    | --> | TransitionNormalizer | --> | serializer.normalizer | --> |   @context Setup  |
+---------------+     +----------------------+     +-----------------------+     +-------------------+

你更新的代码与上面的建议:

namespace App\Serializer;

use Symfony\Component\Serializer\Normalizer\ContextAwareNormalizerInterface;
use Symfony\Component\Serializer\Normalizer\NormalizerInterface;

class TransitionNormalizer implements ContextAwareNormalizerInterface
{
    private $decorated;

    public function __construct(NormalizerInterface $decorated)
    {
        $this->decorated = $decorated;
    }

    public function normalize($object, string $format = null, array $context = [])
    {
        $data = $this->decorated->normalize($object, $format, $context);
        $data['@context'] = '/contexts/Transition';
        $data['@id'] = '/transitions/' . $object->id;
        $data['@type'] = 'https://schema.org/UpdateAction';

        return $data;
    }

    public function supportsNormalization($data, string $format = null, array $context = []): bool
    {
        return $data instanceof Transition;
    }
}

// config/services.yaml
services:
    App\Serializer\TransitionNormalizer:
        decorates: 'serializer.normalizer.object'
        tags: ['serializer.normalizer']

// Your ApiResource and Provider remains the same
#[ApiResource(
    types: 'https://schema.org/UpdateAction',
    provider: TransitionStateProvider::class,
    normalizationContext: ['groups' => ['transition']]
)]
class Transition
{
    #[ApiProperty(
        identifier: true,
        types: ['https://schema.org/identifier'],
    )]
    public int $id;
}

class TransitionStateProvider implements ProviderInterface
{
    public function provide(Operation $operation, array $uriVariables = [], array $context = []): object|array|null
    {
        $transition = new Transition();
        $transition->id = 1;
        
        return $transition;
    }
}