1 language.admin.inc language_admin_add_custom_form_validate($form, &$form_state)

Validate the language addition form on custom language button.

File

core/modules/language/language.admin.inc, line 244
Admin page callbacks for the Language module.

Code

function language_admin_add_custom_form_validate($form, &$form_state) {
  if ($form_state['values']['predefined_langcode'] == 'custom') {
    $langcode = $form_state['values']['langcode'];
    // Reuse the editing form validation routine if we add a custom language.
    language_admin_edit_form_validate($form, $form_state);

    $languages = language_list();
    if (isset($languages[$langcode])) {
      form_set_error('langcode', t('The language %language (%langcode) already exists.', array('%language' => $languages[$langcode]->name, '%langcode' => $langcode)));
    }
  }
  else {
    form_set_error('predefined_langcode', t('Use the <em>Add language</em> button to save a predefined language.'));
  }
}