1) { $files = $install_state['translations']; } else { $files = []; } $standard_languages = LanguageManager::getStandardLanguageList(); $select_options = []; $browser_options = []; $form['#title'] = 'Choose language'; // Build a select list with language names in native language for the user // to choose from. And build a list of available languages for the browser // to select the language default from. // Select lists based on all standard languages. foreach ($standard_languages as $langcode => $language_names) { $select_options[$langcode] = $language_names[1]; $browser_options[$langcode] = $langcode; } // Add languages based on language files in the translations directory. if (count($files)) { foreach ($files as $langcode => $uri) { $select_options[$langcode] = isset($standard_languages[$langcode]) ? $standard_languages[$langcode][1] : $langcode; $browser_options[$langcode] = $langcode; } } asort($select_options); $request = Request::createFromGlobals(); $browser_langcode = UserAgent::getBestMatchingLangcode($request->server->get('HTTP_ACCEPT_LANGUAGE'), $browser_options); $form['langcode'] = [ '#type' => 'select', '#title' => 'Choose language', '#title_display' => 'invisible', '#options' => $select_options, // Use the browser detected language as default or English if nothing found. '#default_value' => !empty($browser_langcode) ? $browser_langcode : 'en', ]; $link_to_english = install_full_redirect_url(['parameters' => ['langcode' => 'en']]); $form['help'] = [ '#type' => 'item', // #markup is XSS admin filtered which ensures unsafe protocols will be // removed from the url. '#markup' => '

Translations will be downloaded from the Drupal Translation website. If you do not want this, select English.

', '#states' => [ 'invisible' => [ 'select[name="langcode"]' => ['value' => 'en'], ], ], ]; $form['actions'] = ['#type' => 'actions']; $form['actions']['submit'] = [ '#type' => 'submit', '#value' => 'Save and continue', '#button_type' => 'primary', ]; return $form; } /** * {@inheritdoc} */ public function submitForm(array &$form, FormStateInterface $form_state) { $build_info = $form_state->getBuildInfo(); $build_info['args'][0]['parameters']['langcode'] = $form_state->getValue('langcode'); $form_state->setBuildInfo($build_info); } }