' . t('About') . '';
$output .= '' . t('The BigPipe module sends pages with dynamic content in a way that allows browsers to show them much faster. For more information, see the online documentation for the BigPipe module.', [':big_pipe-documentation' => 'https://www.drupal.org/documentation/modules/big_pipe']) . '
';
$output .= '' . t('Uses') . '
';
$output .= '';
$output .= '- ' . t('Speeding up your site') . '
';
$output .= '- ' . t('The module requires no configuration. Every part of the page contains metadata that allows BigPipe to figure this out on its own.') . '
';
$output .= '
';
return $output;
}
}
/**
* Implements hook_page_attachments().
*
* @see \Drupal\big_pipe\Controller\BigPipeController::setNoJsCookie()
*/
function big_pipe_page_attachments(array &$page) {
// Routes that don't use BigPipe also don't need no-JS detection.
if (\Drupal::routeMatch()->getRouteObject()->getOption('_no_big_pipe')) {
return;
}
$request = \Drupal::request();
// BigPipe is only used when there is an actual session, so only add the no-JS
// detection when there actually is a session.
// @see \Drupal\big_pipe\Render\Placeholder\BigPipeStrategy.
$session_exists = \Drupal::service('session_configuration')->hasSession($request);
$page['#cache']['contexts'][] = 'session.exists';
// Only do the no-JS detection while we don't know if there's no JS support:
// avoid endless redirect loops.
$has_big_pipe_nojs_cookie = $request->cookies->has(BigPipeStrategy::NOJS_COOKIE);
$page['#cache']['contexts'][] = 'cookies:' . BigPipeStrategy::NOJS_COOKIE;
if ($session_exists) {
if (!$has_big_pipe_nojs_cookie) {
// Let server set the BigPipe no-JS cookie.
$page['#attached']['html_head'][] = [
[
// Redirect through a 'Refresh' meta tag if JavaScript is disabled.
'#tag' => 'meta',
'#noscript' => TRUE,
'#attributes' => [
'http-equiv' => 'Refresh',
'content' => '0; URL=' . Url::fromRoute('big_pipe.nojs', [], ['query' => \Drupal::service('redirect.destination')->getAsArray()])->toString(),
],
],
'big_pipe_detect_nojs',
];
}
else {
// Let client delete the BigPipe no-JS cookie.
$page['#attached']['html_head'][] = [
[
'#tag' => 'script',
'#value' => 'document.cookie = "' . BigPipeStrategy::NOJS_COOKIE . '=1; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT"',
],
'big_pipe_detect_js',
];
}
}
}