Validates whether the widget is required and contains values.

Parameters

array $element: The form element.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

array $form: The form array.

File

core/modules/media_library/src/Plugin/Field/FieldWidget/MediaLibraryWidget.php, line 999

Class

MediaLibraryWidget

Plugin implementation of the 'media_library_widget' widget.

Namespace

Drupal\media_library\Plugin\Field\FieldWidget

Code

public static function validateRequired(array $element, FormStateInterface $form_state, array $form) {
  // If a remove button triggered submit, this validation isn't needed.
  if (in_array([
    static::class,
    'removeItem',
  ], $form_state->getSubmitHandlers(), TRUE)) {
    return;
  }
  // If user has no access, the validation isn't needed.
  if (isset($element['#access']) && !$element['#access']) {
    return;
  }
  $field_state = static::getFieldState($element, $form_state);
  // Trigger error if the field is required and no media is present. Although
  // the Form API's default validation would also catch this, the validation
  // error message is too vague, so a more precise one is provided here.
  if (count($field_state['items']) === 0) {
    $form_state->setError($element, new TranslatableMarkup('@name field is required.', [
      '@name' => $element['#title'],
    ]));
  }
}

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