class FieldNormalizer

Same name in this branch
  1. 11.x core/modules/serialization/src/Normalizer/FieldNormalizer.php \Drupal\serialization\Normalizer\FieldNormalizer
Same name in other branches
  1. 9 core/modules/jsonapi/src/Normalizer/FieldNormalizer.php \Drupal\jsonapi\Normalizer\FieldNormalizer
  2. 9 core/modules/serialization/src/Normalizer/FieldNormalizer.php \Drupal\serialization\Normalizer\FieldNormalizer
  3. 9 core/modules/hal/src/Normalizer/FieldNormalizer.php \Drupal\hal\Normalizer\FieldNormalizer
  4. 8.9.x core/modules/jsonapi/src/Normalizer/FieldNormalizer.php \Drupal\jsonapi\Normalizer\FieldNormalizer
  5. 8.9.x core/modules/serialization/src/Normalizer/FieldNormalizer.php \Drupal\serialization\Normalizer\FieldNormalizer
  6. 8.9.x core/modules/hal/src/Normalizer/FieldNormalizer.php \Drupal\hal\Normalizer\FieldNormalizer
  7. 10 core/modules/jsonapi/src/Normalizer/FieldNormalizer.php \Drupal\jsonapi\Normalizer\FieldNormalizer
  8. 10 core/modules/serialization/src/Normalizer/FieldNormalizer.php \Drupal\serialization\Normalizer\FieldNormalizer

Converts the Drupal field structure to a JSON:API array structure.

@internal JSON:API maintains no PHP API since its API is the HTTP API. This class may change at any time and this will break any dependencies on it.

Hierarchy

Expanded class hierarchy of FieldNormalizer

See also

https://www.drupal.org/project/drupal/issues/3032787

jsonapi.api.php

1 string reference to 'FieldNormalizer'
jsonapi.services.yml in core/modules/jsonapi/jsonapi.services.yml
core/modules/jsonapi/jsonapi.services.yml
1 service uses FieldNormalizer
serializer.normalizer.field.jsonapi in core/modules/jsonapi/jsonapi.services.yml
Drupal\jsonapi\Normalizer\FieldNormalizer

File

core/modules/jsonapi/src/Normalizer/FieldNormalizer.php, line 21

Namespace

Drupal\jsonapi\Normalizer
View source
class FieldNormalizer extends NormalizerBase implements DenormalizerInterface {
    
    /**
     * {@inheritdoc}
     */
    public function normalize($field, $format = NULL, array $context = []) : array|string|int|float|bool|\ArrayObject|null {
        
        /** @var \Drupal\Core\Field\FieldItemListInterface $field */
        $normalized_items = $this->normalizeFieldItems($field, $format, $context);
        assert($context['resource_object'] instanceof ResourceObject);
        return $context['resource_object']->getResourceType()
            ->getFieldByInternalName($field->getName())
            ->hasOne() ? array_shift($normalized_items) ?: CacheableNormalization::permanent(NULL) : CacheableNormalization::aggregate($normalized_items);
    }
    
    /**
     * {@inheritdoc}
     */
    public function denormalize($data, $class, $format = NULL, array $context = []) : mixed {
        $field_definition = $context['field_definition'];
        assert($field_definition instanceof FieldDefinitionInterface);
        $resource_type = $context['resource_type'];
        assert($resource_type instanceof ResourceType);
        // If $data contains items (recognizable by numerical array keys, which
        // Drupal's Field API calls "deltas"), then it already is itemized; it's not
        // using the simplified JSON structure that JSON:API generates.
        $is_already_itemized = is_array($data) && array_reduce(array_keys($data), function ($carry, $index) {
            return $carry && is_numeric($index);
        }, TRUE);
        $itemized_data = $is_already_itemized ? $data : [
            0 => $data,
        ];
        // Single-cardinality fields don't need itemization.
        $field_item_class = $field_definition->getItemDefinition()
            ->getClass();
        if (count($itemized_data) === 1 && $resource_type->getFieldByInternalName($field_definition->getName())
            ->hasOne()) {
            return $this->serializer
                ->denormalize($itemized_data[0], $field_item_class, $format, $context);
        }
        $data_internal = [];
        foreach ($itemized_data as $delta => $field_item_value) {
            $data_internal[$delta] = $this->serializer
                ->denormalize($field_item_value, $field_item_class, $format, $context);
        }
        return $data_internal;
    }
    
    /**
     * Helper function to normalize field items.
     *
     * @param \Drupal\Core\Field\FieldItemListInterface $field
     *   The field object.
     * @param string $format
     *   The format.
     * @param array $context
     *   The context array.
     *
     * @return \Drupal\jsonapi\Normalizer\FieldItemNormalizer[]
     *   The array of normalized field items.
     */
    protected function normalizeFieldItems(FieldItemListInterface $field, $format, array $context) {
        $normalizer_items = [];
        if (!$field->isEmpty()) {
            foreach ($field as $field_item) {
                $normalizer_items[] = $this->serializer
                    ->normalize($field_item, $format, $context);
            }
        }
        return $normalizer_items;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getSupportedTypes(?string $format) : array {
        return [
            FieldItemListInterface::class => TRUE,
        ];
    }

}

Members

Title Sort descending Modifiers Object type Summary Overriden Title Overrides
CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY constant Name of key for bubbling cacheability metadata via serialization context.
FieldNormalizer::denormalize public function
FieldNormalizer::getSupportedTypes public function Overrides NormalizerBase::getSupportedTypes 1
FieldNormalizer::normalize public function 1
FieldNormalizer::normalizeFieldItems protected function Helper function to normalize field items.
NormalizerBase::$format protected property List of formats which supports (de-)normalization. Overrides NormalizerBase::$format
NormalizerBase::addCacheableDependency protected function Adds cacheability if applicable.
NormalizerBase::checkFormat protected function Checks if the provided format is supported by this normalizer. Overrides NormalizerBase::checkFormat
NormalizerBase::rasterizeValueRecursive protected static function Rasterizes a value recursively.
NormalizerBase::supportsDenormalization public function Implements \Symfony\Component\Serializer\Normalizer\DenormalizerInterface::supportsDenormalization() 1
NormalizerBase::supportsNormalization public function 1

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