function big_pipe_page_attachments
Same name in other branches
- 9 core/modules/big_pipe/big_pipe.module \big_pipe_page_attachments()
- 8.9.x core/modules/big_pipe/big_pipe.module \big_pipe_page_attachments()
- 11.x core/modules/big_pipe/big_pipe.module \big_pipe_page_attachments()
Implements hook_page_attachments().
See also
\Drupal\big_pipe\Controller\BigPipeController::setNoJsCookie()
File
-
core/
modules/ big_pipe/ big_pipe.module, line 35
Code
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',
];
}
}
}
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