function NegotiationUrlForm::buildForm

Overrides ConfigFormBase::buildForm

File

core/modules/language/src/Form/NegotiationUrlForm.php, line 74

Class

NegotiationUrlForm

Configure the URL language negotiation method for this site.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    global $base_url;
    $config = $this->config('language.negotiation');
    $form['language_negotiation_url_part'] = [
        '#title' => $this->t('Part of the URL that determines language'),
        '#type' => 'radios',
        '#options' => [
            LanguageNegotiationUrl::CONFIG_PATH_PREFIX => $this->t('Path prefix'),
            LanguageNegotiationUrl::CONFIG_DOMAIN => $this->t('Domain'),
        ],
        '#default_value' => $config->get('url.source'),
    ];
    $form['prefix'] = [
        '#type' => 'details',
        '#tree' => TRUE,
        '#title' => $this->t('Path prefix configuration'),
        '#open' => TRUE,
        '#description' => $this->t('Language codes or other custom text to use as a path prefix for URL language detection. For the selected fallback language, this value may be left blank. <strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "deutsch" as the path prefix code for German results in URLs like "example.com/deutsch/contact".'),
        '#states' => [
            'visible' => [
                ':input[name="language_negotiation_url_part"]' => [
                    'value' => (string) LanguageNegotiationUrl::CONFIG_PATH_PREFIX,
                ],
            ],
        ],
    ];
    $form['domain'] = [
        '#type' => 'details',
        '#tree' => TRUE,
        '#title' => $this->t('Domain configuration'),
        '#open' => TRUE,
        '#description' => $this->t('The domain names to use for these languages. <strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "de.example.com" as language domain for German will result in a URL like "http://de.example.com/contact".'),
        '#states' => [
            'visible' => [
                ':input[name="language_negotiation_url_part"]' => [
                    'value' => (string) LanguageNegotiationUrl::CONFIG_DOMAIN,
                ],
            ],
        ],
    ];
    $languages = $this->languageManager
        ->getLanguages();
    $prefixes = $config->get('url.prefixes');
    $domains = $config->get('url.domains');
    foreach ($languages as $langcode => $language) {
        $t_args = [
            '%language' => $language->getName(),
            '%langcode' => $language->getId(),
        ];
        $form['prefix'][$langcode] = [
            '#type' => 'textfield',
            '#title' => $language->isDefault() ? $this->t('%language (%langcode) path prefix (Default language)', $t_args) : $this->t('%language (%langcode) path prefix', $t_args),
            '#maxlength' => 64,
            '#default_value' => $prefixes[$langcode] ?? '',
            '#field_prefix' => $base_url . '/',
        ];
        $form['domain'][$langcode] = [
            '#type' => 'textfield',
            '#title' => $this->t('%language (%langcode) domain', [
                '%language' => $language->getName(),
                '%langcode' => $language->getId(),
            ]),
            '#maxlength' => 128,
            '#default_value' => $domains[$langcode] ?? '',
        ];
    }
    $form_state->setRedirect('language.negotiation');
    return parent::buildForm($form, $form_state);
}