class OptionsKeyFormatter

Plugin implementation of the 'list_key' formatter.

Plugin annotation

@FieldFormatter(
  id = "list_key",
  label = @Translation("Key"),
  field_types = {
    "list_integer",
    "list_float",
    "list_string",
  }
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements \Drupal\Component\Plugin\PluginInspectionInterface, \Drupal\Component\Plugin\DerivativeInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait extends \Drupal\Component\Plugin\PluginBase
    • class \Drupal\Core\Field\PluginSettingsBase implements \Drupal\Core\Field\PluginSettingsInterface, \Drupal\Component\Plugin\DependentPluginInterface extends \Drupal\Core\Plugin\PluginBase
      • class \Drupal\Core\Field\FormatterBase implements \Drupal\Core\Field\FormatterInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface extends \Drupal\Core\Field\PluginSettingsBase
        • class \Drupal\options\Plugin\Field\FieldFormatter\OptionsKeyFormatter extends \Drupal\Core\Field\FormatterBase

Expanded class hierarchy of OptionsKeyFormatter

File

core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php, line 22

Namespace

class OptionsKeyFormatter extends FormatterBase {
  
  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];
    foreach ($items as $delta => $item) {
      $elements[$delta] = [
        '#markup' => $item->value,
        '#allowed_tags' => FieldFilteredMarkup::allowedTags(),
      ];
    }
    return $elements;
  }

}