JsonldEncoder.php

<?php

/**
 * @file
 * Definition of Drupal\jsonld\JsonldEncoder.
 */
namespace Drupal\jsonld;

use Symfony\Component\Serializer\Encoder\EncoderInterface;
use Symfony\Component\Serializer\Encoder\JsonEncoder;

/**
 * Encodes JSON-LD data.
 *
 * Simply respond to JSON-LD requests using the JSON encoder.
 */
class JsonldEncoder extends JsonEncoder implements EncoderInterface {

  /**
   * The formats that this Encoder supports.
   *
   * @var array
   */
  protected static $format = array(
    'jsonld',
    'drupal_jsonld',
  );

  /**
   * Check whether the request is for JSON-LD.
   *
   * @param string $format
   *   The short name of the format returned by ContentNegotiation.
   *
   * @return bool
   *   Returns TRUE if the encoder can handle the request.
   */
  public function supportsEncoding($format) {
    return in_array($format, static::$format);
  }

}