function PathElement::validateMatchedPath

Form element validation handler for matched_path elements.

Note that #maxlength is validated by _form_validate() already.

This checks that the submitted value matches an active route.

File

core/lib/Drupal/Core/Render/Element/PathElement.php, line 61

Class

PathElement

Provides a matched path render element.

Namespace

Code

public static function validateMatchedPath(&$element, FormStateInterface $form_state, &$complete_form) {
    if (!empty($element['#value']) && ($element['#validate_path'] || $element['#convert_path'] != self::CONVERT_NONE)) {
        
        /** @var \Drupal\Core\Url $url */
        if ($url = \Drupal::service('path.validator')->getUrlIfValid($element['#value'])) {
            if ($url->isExternal()) {
                $form_state->setError($element, t('You cannot use an external URL, please enter a relative path.'));
                return;
            }
            if ($element['#convert_path'] == self::CONVERT_NONE) {
                // Url is valid, no conversion required.
                return;
            }
            // We do the value conversion here whilst the Url object is in scope
            // after validation has occurred.
            if ($element['#convert_path'] == self::CONVERT_ROUTE) {
                $form_state->setValueForElement($element, [
                    'route_name' => $url->getRouteName(),
                    'route_parameters' => $url->getRouteParameters(),
                ]);
                return;
            }
            elseif ($element['#convert_path'] == self::CONVERT_URL) {
                $form_state->setValueForElement($element, $url);
                return;
            }
        }
        $form_state->setError($element, t('This path does not exist or you do not have permission to link to %path.', [
            '%path' => $element['#value'],
        ]));
    }
}