class FieldBlock in Drupal 8

Same name in this branch

8 core/modules/layout_builder/src/Plugin/Block/FieldBlock.php \Drupal\layout_builder\Plugin\Block\FieldBlock
8 core/modules/layout_builder/tests/modules/layout_builder_fieldblock_test/src/Plugin/Block/FieldBlock.php \Drupal\layout_builder_fieldblock_test\Plugin\Block\FieldBlock

Same name and namespace in other branches

9 core/modules/layout_builder/src/Plugin/Block/FieldBlock.php \Drupal\layout_builder\Plugin\Block\FieldBlock

Provides a block that renders a field from an entity.

@Block( id = "field_block", deriver = "\Drupal\layout_builder\Plugin\Derivative\FieldBlockDeriver", )

@internal Plugin classes are internal.

Hierarchy

class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
- class \Drupal\Component\Plugin\ContextAwarePluginBase implements ContextAwarePluginInterface
  - class \Drupal\Core\Plugin\ContextAwarePluginBase implements CacheableDependencyInterface, ContextAwarePluginInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait
    class \Drupal\Core\Block\BlockBase implements BlockPluginInterface, PluginWithFormsInterface, PreviewFallbackInterface uses BlockPluginTrait, ContextAwarePluginAssignmentTrait
    class \Drupal\layout_builder\Plugin\Block\FieldBlock implements ContainerFactoryPluginInterface, ContextAwarePluginInterface

Expanded class hierarchy of FieldBlock

2 files declare their use of FieldBlock

FieldBlock.php in core/modules/layout_builder/tests/modules/layout_builder_fieldblock_test/src/Plugin/Block/FieldBlock.php
FieldBlockTest.php in core/modules/layout_builder/tests/src/Kernel/FieldBlockTest.php

File

core/modules/layout_builder/src/Plugin/Block/FieldBlock.php, line 38

Namespace

Drupal\layout_builder\Plugin\Block

View source

class FieldBlock extends BlockBase implements ContextAwarePluginInterface, ContainerFactoryPluginInterface {

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

  /**
   * The formatter manager.
   *
   * @var \Drupal\Core\Field\FormatterPluginManager
   */
  protected $formatterManager;

  /**
   * The entity type ID.
   *
   * @var string
   */
  protected $entityTypeId;

  /**
   * The bundle ID.
   *
   * @var string
   */
  protected $bundle;

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

  /**
   * The field definition.
   *
   * @var \Drupal\Core\Field\FieldDefinitionInterface
   */
  protected $fieldDefinition;

  /**
   * The module handler.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface
   */
  protected $moduleHandler;

  /**
   * The logger.
   *
   * @var \Psr\Log\LoggerInterface
   */
  protected $logger;

  /**
   * Constructs a new FieldBlock.
   *
   * @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\EntityFieldManagerInterface $entity_field_manager
   *   The entity field manager.
   * @param \Drupal\Core\Field\FormatterPluginManager $formatter_manager
   *   The formatter manager.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler.
   * @param \Psr\Log\LoggerInterface $logger
   *   The logger.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityFieldManagerInterface $entity_field_manager, FormatterPluginManager $formatter_manager, ModuleHandlerInterface $module_handler, LoggerInterface $logger) {
    $this->entityFieldManager = $entity_field_manager;
    $this->formatterManager = $formatter_manager;
    $this->moduleHandler = $module_handler;
    $this->logger = $logger;

    // Get the entity type and field name from the plugin ID.
    list(, $entity_type_id, $bundle, $field_name) = explode(static::DERIVATIVE_SEPARATOR, $plugin_id, 4);
    $this->entityTypeId = $entity_type_id;
    $this->bundle = $bundle;
    $this->fieldName = $field_name;
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container
      ->get('entity_field.manager'), $container
      ->get('plugin.manager.field.formatter'), $container
      ->get('module_handler'), $container
      ->get('logger.channel.layout_builder'));
  }

  /**
   * 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() {
    $display_settings = $this
      ->getConfiguration()['formatter'];
    $display_settings['third_party_settings']['layout_builder']['view_mode'] = $this
      ->getContextValue('view_mode');
    $entity = $this
      ->getEntity();
    try {
      $build = $entity
        ->get($this->fieldName)
        ->view($display_settings);
    } catch (EnforcedResponseException $e) {
      throw $e;
    } catch (\Exception $e) {
      $build = [];
      $this->logger
        ->warning('The field "%field" failed to render with the error of "%error".', [
        '%field' => $this->fieldName,
        '%error' => $e
          ->getMessage(),
      ]);
    }
    CacheableMetadata::createFromRenderArray($build)
      ->addCacheableDependency($this)
      ->applyTo($build);
    return $build;
  }

  /**
   * {@inheritdoc}
   */
  public function getPreviewFallbackString() {
    return new TranslatableMarkup('"@field" field', [
      '@field' => $this
        ->getFieldDefinition()
        ->getLabel(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  protected function blockAccess(AccountInterface $account) {
    $entity = $this
      ->getEntity();

    // First consult the entity.
    $access = $entity
      ->access('view', $account, TRUE);
    if (!$access
      ->isAllowed()) {
      return $access;
    }

    // Check that the entity in question has this field.
    if (!$entity instanceof FieldableEntityInterface || !$entity
      ->hasField($this->fieldName)) {
      return $access
        ->andIf(AccessResult::forbidden());
    }

    // Check field access.
    $field = $entity
      ->get($this->fieldName);
    $access = $access
      ->andIf($field
      ->access('view', $account, TRUE));
    if (!$access
      ->isAllowed()) {
      return $access;
    }

    // Check to see if the field has any values.
    if ($field
      ->isEmpty()) {
      return $access
        ->andIf(AccessResult::forbidden());
    }
    return $access;
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'label_display' => FALSE,
      'formatter' => [
        'label' => 'above',
        'type' => $this->pluginDefinition['default_formatter'],
        'settings' => [],
        'third_party_settings' => [],
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state) {
    $config = $this
      ->getConfiguration();
    $form['formatter'] = [
      '#tree' => TRUE,
      '#process' => [
        [
          $this,
          'formatterSettingsProcessCallback',
        ],
      ],
    ];
    $form['formatter']['label'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Label'),
      // @todo This is directly copied from
      //   \Drupal\field_ui\Form\EntityViewDisplayEditForm::getFieldLabelOptions(),
      //   resolve this in https://www.drupal.org/project/drupal/issues/2933924.
      '#options' => [
        'above' => $this
          ->t('Above'),
        'inline' => $this
          ->t('Inline'),
        'hidden' => '- ' . $this
          ->t('Hidden') . ' -',
        'visually_hidden' => '- ' . $this
          ->t('Visually Hidden') . ' -',
      ],
      '#default_value' => $config['formatter']['label'],
    ];
    $form['formatter']['type'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Formatter'),
      '#options' => $this
        ->getApplicablePluginOptions($this
        ->getFieldDefinition()),
      '#required' => TRUE,
      '#default_value' => $config['formatter']['type'],
      '#ajax' => [
        'callback' => [
          static::class,
          'formatterSettingsAjaxCallback',
        ],
        'wrapper' => 'formatter-settings-wrapper',
      ],
    ];

    // Add the formatter settings to the form via AJAX.
    $form['formatter']['settings_wrapper'] = [
      '#prefix' => '<div id="formatter-settings-wrapper">',
      '#suffix' => '</div>',
    ];
    return $form;
  }

  /**
   * Render API callback: builds the formatter settings elements.
   */
  public function formatterSettingsProcessCallback(array &$element, FormStateInterface $form_state, array &$complete_form) {
    if ($formatter = $this
      ->getFormatter($element['#parents'], $form_state)) {
      $element['settings_wrapper']['settings'] = $formatter
        ->settingsForm($complete_form, $form_state);
      $element['settings_wrapper']['settings']['#parents'] = array_merge($element['#parents'], [
        'settings',
      ]);
      $element['settings_wrapper']['third_party_settings'] = $this
        ->thirdPartySettingsForm($formatter, $this
        ->getFieldDefinition(), $complete_form, $form_state);
      $element['settings_wrapper']['third_party_settings']['#parents'] = array_merge($element['#parents'], [
        'third_party_settings',
      ]);
      FormHelper::rewriteStatesSelector($element['settings_wrapper'], "fields[{$this->fieldName}][settings_edit_form]", 'settings[formatter]');

      // Store the array parents for our element so that we can retrieve the
      // formatter settings in our AJAX callback.
      $form_state
        ->set('field_block_array_parents', $element['#array_parents']);
    }
    return $element;
  }

  /**
   * Adds the formatter third party settings forms.
   *
   * @param \Drupal\Core\Field\FormatterInterface $plugin
   *   The formatter.
   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
   *   The field definition.
   * @param array $form
   *   The (entire) configuration form array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   *
   * @return array
   *   The formatter third party settings form.
   */
  protected function thirdPartySettingsForm(FormatterInterface $plugin, FieldDefinitionInterface $field_definition, array $form, FormStateInterface $form_state) {
    $settings_form = [];

    // Invoke hook_field_formatter_third_party_settings_form(), keying resulting
    // subforms by module name.
    foreach ($this->moduleHandler
      ->getImplementations('field_formatter_third_party_settings_form') as $module) {
      $settings_form[$module] = $this->moduleHandler
        ->invoke($module, 'field_formatter_third_party_settings_form', [
        $plugin,
        $field_definition,
        EntityDisplayBase::CUSTOM_MODE,
        $form,
        $form_state,
      ]);
    }
    return $settings_form;
  }

  /**
   * Render API callback: gets the layout settings elements.
   */
  public static function formatterSettingsAjaxCallback(array $form, FormStateInterface $form_state) {
    $formatter_array_parents = $form_state
      ->get('field_block_array_parents');
    return NestedArray::getValue($form, array_merge($formatter_array_parents, [
      'settings_wrapper',
    ]));
  }

  /**
   * {@inheritdoc}
   */
  public function blockSubmit($form, FormStateInterface $form_state) {
    $this->configuration['formatter'] = $form_state
      ->getValue('formatter');
  }

  /**
   * Gets the field definition.
   *
   * @return \Drupal\Core\Field\FieldDefinitionInterface
   *   The field definition.
   */
  protected function getFieldDefinition() {
    if (empty($this->fieldDefinition)) {
      $field_definitions = $this->entityFieldManager
        ->getFieldDefinitions($this->entityTypeId, $this->bundle);
      $this->fieldDefinition = $field_definitions[$this->fieldName];
    }
    return $this->fieldDefinition;
  }

  /**
   * Returns an array of applicable formatter options for a field.
   *
   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
   *   The field definition.
   *
   * @return array
   *   An array of applicable formatter options.
   *
   * @see \Drupal\field_ui\Form\EntityDisplayFormBase::getApplicablePluginOptions()
   */
  protected function getApplicablePluginOptions(FieldDefinitionInterface $field_definition) {
    $options = $this->formatterManager
      ->getOptions($field_definition
      ->getType());
    $applicable_options = [];
    foreach ($options as $option => $label) {
      $plugin_class = DefaultFactory::getPluginClass($option, $this->formatterManager
        ->getDefinition($option));
      if ($plugin_class::isApplicable($field_definition)) {
        $applicable_options[$option] = $label;
      }
    }
    return $applicable_options;
  }

  /**
   * Gets the formatter object.
   *
   * @param array $parents
   *   The #parents of the element representing the formatter.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return \Drupal\Core\Field\FormatterInterface
   *   The formatter object.
   */
  protected function getFormatter(array $parents, FormStateInterface $form_state) {

    // Use the processed values, if available.
    $configuration = NestedArray::getValue($form_state
      ->getValues(), $parents);
    if (!$configuration) {

      // Next check the raw user input.
      $configuration = NestedArray::getValue($form_state
        ->getUserInput(), $parents);
      if (!$configuration) {

        // If no user input exists, use the default values.
        $configuration = $this
          ->getConfiguration()['formatter'];
      }
    }
    return $this->formatterManager
      ->getInstance([
      'configuration' => $configuration,
      'field_definition' => $this
        ->getFieldDefinition(),
      'view_mode' => EntityDisplayBase::CUSTOM_MODE,
      'prepare' => TRUE,
    ]);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BlockPluginInterface::BLOCK_LABEL_VISIBLE		constant	Indicates the block label (title) should be displayed to end users.
BlockPluginTrait::$transliteration	protected	property	The transliteration service.
BlockPluginTrait::access	public	function
BlockPluginTrait::baseConfigurationDefaults	protected	function	Returns generic default configuration for block plugins.
BlockPluginTrait::blockValidate	public	function		3
BlockPluginTrait::buildConfigurationForm	public	function	Creates a generic configuration form for all block types. Individual block plugins can add elements to this form by overriding BlockBase::blockForm(). Most block plugins should not override this method unless they need to alter the generic form elements.	2
BlockPluginTrait::calculateDependencies	public	function
BlockPluginTrait::getConfiguration	public	function		1
BlockPluginTrait::getMachineNameSuggestion	public	function		1
BlockPluginTrait::label	public	function
BlockPluginTrait::setConfiguration	public	function
BlockPluginTrait::setConfigurationValue	public	function
BlockPluginTrait::setTransliteration	public	function	Sets the transliteration service.
BlockPluginTrait::submitConfigurationForm	public	function	Most block plugins should not override this method. To add submission handling for a specific block type, override BlockBase::blockSubmit().
BlockPluginTrait::transliteration	protected	function	Wraps the transliteration service.
BlockPluginTrait::validateConfigurationForm	public	function	Most block plugins should not override this method. To add validation for a specific block type, override BlockBase::blockValidate().	1
ContextAwarePluginAssignmentTrait::addContextAssignmentElement	protected	function	Builds a form element for assigning a context to a given slot.
ContextAwarePluginAssignmentTrait::contextHandler	protected	function	Wraps the context handler.
ContextAwarePluginBase::$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::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
FieldBlock::$bundle	protected	property	The bundle ID.
FieldBlock::$entityFieldManager	protected	property	The entity field manager.
FieldBlock::$entityTypeId	protected	property	The entity type ID.
FieldBlock::$fieldDefinition	protected	property	The field definition.
FieldBlock::$fieldName	protected	property	The field name.
FieldBlock::$formatterManager	protected	property	The formatter manager.
FieldBlock::$logger	protected	property	The logger.
FieldBlock::$moduleHandler	protected	property	The module handler.
FieldBlock::blockAccess	protected	function	Indicates whether the block should be shown. Overrides BlockPluginTrait::blockAccess
FieldBlock::blockForm	public	function	Overrides BlockPluginTrait::blockForm
FieldBlock::blockSubmit	public	function	Overrides BlockPluginTrait::blockSubmit
FieldBlock::build	public	function	Builds and returns the renderable array for this block plugin. Overrides BlockPluginInterface::build
FieldBlock::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
FieldBlock::defaultConfiguration	public	function	Overrides BlockPluginTrait::defaultConfiguration
FieldBlock::formatterSettingsAjaxCallback	public static	function	Render API callback: gets the layout settings elements.
FieldBlock::formatterSettingsProcessCallback	public	function	Render API callback: builds the formatter settings elements.
FieldBlock::getApplicablePluginOptions	protected	function	Returns an array of applicable formatter options for a field.
FieldBlock::getEntity	protected	function	Gets the entity that has the field.
FieldBlock::getFieldDefinition	protected	function	Gets the field definition.
FieldBlock::getFormatter	protected	function	Gets the formatter object.
FieldBlock::getPreviewFallbackString	public	function	Overrides BlockPluginTrait::getPreviewFallbackString
FieldBlock::thirdPartySettingsForm	protected	function	Adds the formatter third party settings forms.
FieldBlock::__construct	public	function	Constructs a new FieldBlock. Overrides BlockPluginTrait::__construct
MessengerTrait::$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

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class FieldBlock in Drupal 8

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