3 namespace Drupal\field_test\Plugin\Field\FieldFormatter;
5 use Drupal\Core\Field\FormatterBase;
6 use Drupal\Core\Field\FieldItemListInterface;
7 use Drupal\Core\Form\FormStateInterface;
10 * Plugin implementation of the 'field_empty_setting' formatter.
13 * id = "field_empty_setting",
14 * label = @Translation("Field empty setting"),
21 class TestFieldEmptySettingFormatter extends FormatterBase {
26 public static function defaultSettings() {
28 'field_empty_setting' => '',
29 ] + parent::defaultSettings();
35 public function settingsForm(array $form, FormStateInterface $form_state) {
36 $element['field_empty_setting'] = [
37 '#title' => t('Setting'),
38 '#type' => 'textfield',
40 '#default_value' => $this->getSetting('field_empty_setting'),
49 public function settingsSummary() {
51 $setting = $this->getSetting('field_empty_setting');
52 if (!empty($setting)) {
53 $summary[] = t('Default empty setting now has a value.');
61 public function viewElements(FieldItemListInterface $items, $langcode) {
65 foreach ($items as $delta => $item) {
66 $elements[$delta] = ['#markup' => $this->getSetting('field_empty_setting')];