public function PluginLabel::viewElements in Plugin 8.2

Builds a renderable array for a field value.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values to be rendered.

string $langcode: The language that should be used to render the field.

Return value

array A renderable array for $items, as an array of child elements keyed by consecutive numeric indexes starting from 0.

Overrides FormatterInterface::viewElements

File

src/Plugin/Field/FieldFormatter/PluginLabel.php, line 24

Class

PluginLabel

A plugin bag field formatter.

Namespace

Drupal\plugin\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $build = [];

  /** @var \Drupal\plugin\Plugin\Field\FieldType\PluginCollectionItemInterface $item */
  foreach ($items as $delta => $item) {
    $plugin_definition = $item
      ->getPluginType()
      ->ensureTypedPluginDefinition($item
      ->getContainedPluginInstance()
      ->getPluginDefinition());
    $build[$delta] = [
      '#markup' => $plugin_definition instanceof PluginLabelDefinitionInterface ? (string) $plugin_definition
        ->getLabel() : $plugin_definition
        ->getId(),
    ];
  }
  return $build;
}