class MetatagNormalizer in Metatag 8

Normalizes metatag into the viewed entity.

Hierarchy

• class \Drupal\serialization\Normalizer\NormalizerBase implements \Symfony\Component\Serializer\SerializerAwareInterface, CacheableNormalizerInterface uses \Symfony\Component\Serializer\SerializerAwareTrait
  • class \Drupal\metatag\Normalizer\MetatagNormalizer

1 file declares its use of MetatagNormalizer

MetatagServiceProvider.php in src/MetatagServiceProvider.php

File

src/Normalizer/MetatagNormalizer.php, line 10

Namespace

Drupal\metatag\Normalizer

class MetatagNormalizer extends NormalizerBase {

  /**
   * {@inheritdoc}
   */
  protected $supportedInterfaceOrClass = 'Drupal\\metatag\\Plugin\\Field\\MetatagEntityFieldItemList';

  /**
   * {@inheritdoc}
   */
  public function normalize($field_item, $format = NULL, array $context = []) {

    // @see metatag_get_tags_from_route()
    $entity = $field_item
      ->getEntity();
    $tags = metatag_get_tags_from_route($entity);
    $normalized['value'] = [];
    if (isset($tags['#attached']['html_head'])) {
      foreach ($tags['#attached']['html_head'] as $tag) {

        // @todo Work out a proper, long-term fix for this.
        if (isset($tag[0]['#attributes']['content'])) {
          $normalized['value'][$tag[1]] = $tag[0]['#attributes']['content'];
        }
        elseif (isset($tag[0]['#attributes']['href'])) {
          $normalized['value'][$tag[1]] = $tag[0]['#attributes']['href'];
        }
      }
    }
    if (isset($context['langcode'])) {
      $normalized['lang'] = $context['langcode'];
    }
    return $normalized;
  }

  /**
   * {@inheritdoc}
   */
  public function supportsDenormalization($data, $type, $format = NULL) {
    return FALSE;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY		constant	Name of key for bubbling cacheability metadata via serialization context.
MetatagNormalizer::$supportedInterfaceOrClass	protected	property	The interface or class that this Normalizer supports. Overrides NormalizerBase::$supportedInterfaceOrClass
MetatagNormalizer::normalize	public	function	Normalizes an object into a set of arrays/scalars.	1
MetatagNormalizer::supportsDenormalization	public	function	Implements \Symfony\Component\Serializer\Normalizer\DenormalizerInterface::supportsDenormalization() Overrides NormalizerBase::supportsDenormalization
NormalizerBase::$format	protected	property	List of formats which supports (de-)normalization.	3
NormalizerBase::addCacheableDependency	protected	function	Adds cacheability if applicable.
NormalizerBase::checkFormat	protected	function	Checks if the provided format is supported by this normalizer.	2
NormalizerBase::supportsNormalization	public	function	Checks whether the given class is supported for normalization by this normalizer.	1