function views_element_validate_tags

Validation callback for query tags.

See also

https://www.drupal.org/node/3572594

File

core/modules/views/views.module, line 396

Code

function views_element_validate_tags($element, FormStateInterface $form_state) : void {
  @trigger_error(__FUNCTION__ . '() is deprecated in drupal:11.4.0 and is removed from drupal:13.0.0. There is no replacement. See https://www.drupal.org/node/3572594', E_USER_DEPRECATED);
  $values = array_map('trim', explode(',', $element['#value']));
  foreach ($values as $value) {
    if (preg_match("/[^a-z_]/", $value)) {
      $form_state->setError($element, t('The query tags may only contain lower-case alphabetical characters and underscores.'));
      return;
    }
  }
}