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class ExtraFieldBlock in Drupal 8

Same name and namespace in other branches
  1. 9 core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php \Drupal\layout_builder\Plugin\Block\ExtraFieldBlock

Provides a block that renders an extra field from an entity.

This block handles fields that are provided by implementations of hook_entity_extra_field_info().

This block plugin handles all other field entities not provided by hook_entity_extra_field_info().

@Block( id = "extra_field_block", deriver = "\Drupal\layout_builder\Plugin\Derivative\ExtraFieldBlockDeriver", )

@internal Plugin classes are internal.

Hierarchy

Expanded class hierarchy of ExtraFieldBlock

See also

\Drupal\layout_builder\Plugin\Block\FieldBlock

1 file declares its use of ExtraFieldBlock
layout_builder.module in core/modules/layout_builder/layout_builder.module
Provides hook implementations for Layout Builder.

File

core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php, line 34

Namespace

Drupal\layout_builder\Plugin\Block
View source 
class ExtraFieldBlock extends BlockBase implements ContextAwarePluginInterface, ContainerFactoryPluginInterface {

  /**
   * The entity field manager.
   *
   * @var \Drupal\Core\Entity\EntityFieldManagerInterface
   */
  protected $entityFieldManager;

  /**
   * The field name.
   *
   * @var string
   */
  protected $fieldName;

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * Constructs a new ExtraFieldBlock.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin ID for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
   *   The entity field manager.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager) {
    $this->entityTypeManager = $entity_type_manager;
    $this->entityFieldManager = $entity_field_manager;

    // Get field name from the plugin ID.
    list(, , , $field_name) = explode(static::DERIVATIVE_SEPARATOR, $plugin_id, 4);
    assert(!empty($field_name));
    $this->fieldName = $field_name;
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'label_display' => FALSE,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container
      ->get('entity_type.manager'), $container
      ->get('entity_field.manager'));
  }

  /**
   * Gets the entity that has the field.
   *
   * @return \Drupal\Core\Entity\FieldableEntityInterface
   *   The entity.
   */
  protected function getEntity() {
    return $this
      ->getContextValue('entity');
  }

  /**
   * {@inheritdoc}
   */
  public function build() {
    $entity = $this
      ->getEntity();

    // Add a placeholder to replace after the entity view is built.
    // @see layout_builder_entity_view_alter().
    $extra_fields = $this->entityFieldManager
      ->getExtraFields($entity
      ->getEntityTypeId(), $entity
      ->bundle());
    if (!isset($extra_fields['display'][$this->fieldName])) {
      $build = [];
    }
    else {
      $build = [
        '#extra_field_placeholder_field_name' => $this->fieldName,
        // Always provide a placeholder. The Layout Builder will NOT invoke
        // hook_entity_view_alter() so extra fields will not be added to the
        // render array. If the hook is invoked the placeholder will be
        // replaced.
        // @see ::replaceFieldPlaceholder()
        '#markup' => $this
          ->t('Placeholder for the @preview_fallback', [
          '@preview_fallback' => $this
            ->getPreviewFallbackString(),
        ]),
      ];
    }
    CacheableMetadata::createFromObject($this)
      ->applyTo($build);
    return $build;
  }

  /**
   * {@inheritdoc}
   */
  public function getPreviewFallbackString() {
    $entity = $this
      ->getEntity();
    $extra_fields = $this->entityFieldManager
      ->getExtraFields($entity
      ->getEntityTypeId(), $entity
      ->bundle());
    return new TranslatableMarkup('"@field" field', [
      '@field' => $extra_fields['display'][$this->fieldName]['label'],
    ]);
  }

  /**
   * Replaces all placeholders for a given field.
   *
   * @param array $build
   *   The built render array for the elements.
   * @param array $built_field
   *   The render array to replace the placeholder.
   * @param string $field_name
   *   The field name.
   *
   * @see ::build()
   */
  public static function replaceFieldPlaceholder(array &$build, array $built_field, $field_name) {
    foreach (Element::children($build) as $child) {
      if (isset($build[$child]['#extra_field_placeholder_field_name']) && $build[$child]['#extra_field_placeholder_field_name'] === $field_name) {
        $placeholder_cache = CacheableMetadata::createFromRenderArray($build[$child]);
        $built_cache = CacheableMetadata::createFromRenderArray($built_field);
        $merged_cache = $placeholder_cache
          ->merge($built_cache);
        $build[$child] = $built_field;
        $merged_cache
          ->applyTo($build);
      }
      else {
        static::replaceFieldPlaceholder($build[$child], $built_field, $field_name);
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  protected function blockAccess(AccountInterface $account) {
    return $this
      ->getEntity()
      ->access('view', $account, TRUE);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
BlockPluginInterface::BLOCK_LABEL_VISIBLE constant Indicates the block label (title) should be displayed to end users.
BlockPluginTrait::$transliteration protected property The transliteration service.
BlockPluginTrait::access public function
BlockPluginTrait::baseConfigurationDefaults protected function Returns generic default configuration for block plugins.
BlockPluginTrait::blockForm public function 16
BlockPluginTrait::blockSubmit public function 13
BlockPluginTrait::blockValidate public function 3
BlockPluginTrait::buildConfigurationForm public function Creates a generic configuration form for all block types. Individual block plugins can add elements to this form by overriding BlockBase::blockForm(). Most block plugins should not override this method unless they need to alter the generic form elements. 2
BlockPluginTrait::calculateDependencies public function
BlockPluginTrait::getConfiguration public function 1
BlockPluginTrait::getMachineNameSuggestion public function 1
BlockPluginTrait::label public function
BlockPluginTrait::setConfiguration public function
BlockPluginTrait::setConfigurationValue public function
BlockPluginTrait::setTransliteration public function Sets the transliteration service.
BlockPluginTrait::submitConfigurationForm public function Most block plugins should not override this method. To add submission handling for a specific block type, override BlockBase::blockSubmit().
BlockPluginTrait::transliteration protected function Wraps the transliteration service.
BlockPluginTrait::validateConfigurationForm public function Most block plugins should not override this method. To add validation for a specific block type, override BlockBase::blockValidate(). 1
ContextAwarePluginAssignmentTrait::addContextAssignmentElement protected function Builds a form element for assigning a context to a given slot.
ContextAwarePluginAssignmentTrait::contextHandler protected function Wraps the context handler.
ContextAwarePluginBase::$context protected property The data objects representing the context of this plugin.
ContextAwarePluginBase::$contexts Deprecated private property Data objects representing the contexts passed in the plugin configuration.
ContextAwarePluginBase::createContextFromConfiguration protected function Overrides ContextAwarePluginBase::createContextFromConfiguration
ContextAwarePluginBase::getCacheContexts public function The cache contexts associated with this object. Overrides CacheableDependencyInterface::getCacheContexts 9
ContextAwarePluginBase::getCacheMaxAge public function The maximum age for which this object may be cached. Overrides CacheableDependencyInterface::getCacheMaxAge 7
ContextAwarePluginBase::getCacheTags public function The cache tags associated with this object. Overrides CacheableDependencyInterface::getCacheTags 4
ContextAwarePluginBase::getContext public function This code is identical to the Component in order to pick up a different Context class. Overrides ContextAwarePluginBase::getContext
ContextAwarePluginBase::getContextDefinition public function Overrides ContextAwarePluginBase::getContextDefinition
ContextAwarePluginBase::getContextDefinitions public function Overrides ContextAwarePluginBase::getContextDefinitions
ContextAwarePluginBase::getContextMapping public function Gets a mapping of the expected assignment names to their context names. Overrides ContextAwarePluginInterface::getContextMapping
ContextAwarePluginBase::getContexts public function Gets the defined contexts. Overrides ContextAwarePluginInterface::getContexts
ContextAwarePluginBase::getContextValue public function Gets the value for a defined context. Overrides ContextAwarePluginInterface::getContextValue
ContextAwarePluginBase::getContextValues public function Gets the values for all defined contexts. Overrides ContextAwarePluginInterface::getContextValues
ContextAwarePluginBase::setContext public function Set a context on this plugin. Overrides ContextAwarePluginBase::setContext
ContextAwarePluginBase::setContextMapping public function Sets a mapping of the expected assignment names to their context names. Overrides ContextAwarePluginInterface::setContextMapping
ContextAwarePluginBase::setContextValue public function Sets the value for a defined context. Overrides ContextAwarePluginBase::setContextValue
ContextAwarePluginBase::validateContexts public function Validates the set values for the defined contexts. Overrides ContextAwarePluginInterface::validateContexts
ContextAwarePluginBase::__get public function Implements magic __get() method.
DependencySerializationTrait::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
ExtraFieldBlock::$entityFieldManager protected property The entity field manager.
ExtraFieldBlock::$entityTypeManager protected property The entity type manager.
ExtraFieldBlock::$fieldName protected property The field name.
ExtraFieldBlock::blockAccess protected function Indicates whether the block should be shown. Overrides BlockPluginTrait::blockAccess
ExtraFieldBlock::build public function Builds and returns the renderable array for this block plugin. Overrides BlockPluginInterface::build
ExtraFieldBlock::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
ExtraFieldBlock::defaultConfiguration public function Overrides BlockPluginTrait::defaultConfiguration
ExtraFieldBlock::getEntity protected function Gets the entity that has the field.
ExtraFieldBlock::getPreviewFallbackString public function Overrides BlockPluginTrait::getPreviewFallbackString
ExtraFieldBlock::replaceFieldPlaceholder public static function Replaces all placeholders for a given field.
ExtraFieldBlock::__construct public function Constructs a new ExtraFieldBlock. Overrides BlockPluginTrait::__construct
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginWithFormsTrait::getFormClass public function
PluginWithFormsTrait::hasFormClass public function
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
TypedDataTrait::$typedDataManager protected property The typed data manager used for creating the data types.
TypedDataTrait::getTypedDataManager public function Gets the typed data manager. 2
TypedDataTrait::setTypedDataManager public function Sets the typed data manager. 2