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

core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php, line 139

Class

BooleanFormatter

Plugin implementation of the 'boolean' formatter.

Namespace

Drupal\Core\Field\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];
  $formats = $this->getOutputFormats();
  foreach ($items as $delta => $item) {
    $format = $this->getSetting('format');
    if ($format == 'custom') {
      $elements[$delta] = [
        '#markup' => $item->value ? $this->getSetting('format_custom_true') : $this->getSetting('format_custom_false'),
      ];
    }
    else {
      $elements[$delta] = [
        '#markup' => $item->value ? $formats[$format][0] : $formats[$format][1],
      ];
    }
  }
  return $elements;
}

---