language_negotiation_url_prefixes_update

language_negotiation_url_prefixes_update()

function language_negotiation_url_prefixes_update() {
  $config = \Drupal::configFactory()->getEditable('language.negotiation');
  $prefixes = $config->get('url.prefixes');
  foreach (\Drupal::languageManager()->getLanguages() as $language) {
    // The prefix for this language should be updated if it's not assigned yet
    // or the prefix is set to the empty string.
    if (empty($prefixes[$language->getId()])) {
      // For the default language, set the prefix to the empty string,
      // otherwise use the langcode.
      $prefixes[$language->getId()] = $language->isDefault() ? '' : $language->getId();
    }
    // Otherwise we keep the configured prefix.
  }
  $config->set('url.prefixes', $prefixes)->save();
}