public function LanguageAddForm::validateCustom in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/language/src/Form/LanguageAddForm.php \Drupal\language\Form\LanguageAddForm::validateCustom()
2. 10 core/modules/language/src/Form/LanguageAddForm.php \Drupal\language\Form\LanguageAddForm::validateCustom()

Validates the language addition form on custom language button.

File

core/modules/language/src/Form/LanguageAddForm.php, line 113

Class

LanguageAddForm

Controller for language addition forms.

Namespace

Drupal\language\Form

Code

public function validateCustom(array $form, FormStateInterface $form_state) {
  if ($form_state
    ->getValue('predefined_langcode') == 'custom') {
    $langcode = $form_state
      ->getValue('langcode');

    // Reuse the editing form validation routine if we add a custom language.
    $this
      ->validateCommon($form['custom_language'], $form_state);
    if ($language = $this->languageManager
      ->getLanguage($langcode)) {
      $form_state
        ->setErrorByName('langcode', $this
        ->t('The language %language (%langcode) already exists.', [
        '%language' => $language
          ->getName(),
        '%langcode' => $langcode,
      ]));
    }
  }
  else {
    $form_state
      ->setErrorByName('predefined_langcode', $this
      ->t('Use the <em>Add language</em> button to save a predefined language.'));
  }
}