function FormBuilder::buildFormAction

Builds the $form['#action'].

Return value

string The URL to be used as the $form['#action'].

File

core/lib/Drupal/Core/Form/FormBuilder.php, line 844

Class

FormBuilder

Provides form building and processing.

Namespace

Code

protected function buildFormAction() {
    // @todo Use <current> instead of the main request in
    //   https://www.drupal.org/node/2505339.
    $request = $this->requestStack
        ->getMainRequest();
    $request_uri = $request->getRequestUri();
    // Prevent cross site requests via the Form API by using an absolute URL
    // when the request uri starts with multiple slashes..
    if (str_starts_with($request_uri, '//')) {
        $request_uri = $request->getUri();
    }
    // @todo Remove this parsing once these are removed from the request in
    //   https://www.drupal.org/node/2504709.
    $parsed = UrlHelper::parse($request_uri);
    unset($parsed['query'][static::AJAX_FORM_REQUEST], $parsed['query'][MainContentViewSubscriber::WRAPPER_FORMAT]);
    $action = $parsed['path'] . ($parsed['query'] ? '?' . UrlHelper::buildQuery($parsed['query']) : '');
    return UrlHelper::filterBadProtocol($action);
}