public static function ListItemBase::validateAllowedValues in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/options/src/Plugin/Field/FieldType/ListItemBase.php \Drupal\options\Plugin\Field\FieldType\ListItemBase::validateAllowedValues()

#element_validate callback for options field allowed values.

Parameters

$element: An associative array containing the properties and children of the generic form element.

$form_state: The current state of the form for the form this element belongs to.

See also

\Drupal\Core\Render\Element\FormElement::processPattern()

File

core/modules/options/src/Plugin/Field/FieldType/ListItemBase.php, line 130

Class

ListItemBase

Plugin base class inherited by the options field types.

Namespace

Drupal\options\Plugin\Field\FieldType

Code

public static function validateAllowedValues($element, FormStateInterface $form_state) {
  $values = static::extractAllowedValues($element['#value'], $element['#field_has_data']);
  if (!is_array($values)) {
    $form_state
      ->setError($element, t('Allowed values list: invalid input.'));
  }
  else {

    // Check that keys are valid for the field type.
    foreach ($values as $key => $value) {
      if ($error = static::validateAllowedValue($key)) {
        $form_state
          ->setError($element, $error);
        break;
      }
    }

    // Prevent removing values currently in use.
    if ($element['#field_has_data']) {
      $lost_keys = array_keys(array_diff_key($element['#allowed_values'], $values));
      if (_options_values_in_use($element['#entity_type'], $element['#field_name'], $lost_keys)) {
        $form_state
          ->setError($element, t('Allowed values list: some values are being removed while currently in use.'));
      }
    }
    $form_state
      ->setValueForElement($element, $values);
  }
}