Returns an AJAX response to render the toolbar subtrees.

Return value

\Drupal\Core\Ajax\AjaxResponse

1 string reference to 'ToolbarController::subtreesAjax'

toolbar.routing.yml in core/modules/toolbar/toolbar.routing.yml

core/modules/toolbar/toolbar.routing.yml

File

core/modules/toolbar/src/Controller/ToolbarController.php, line 24

Class

ToolbarController

Defines a controller for the toolbar module.

Namespace

Drupal\toolbar\Controller

Code

public function subtreesAjax() {
  [$subtrees] = toolbar_get_rendered_subtrees();
  $response = new AjaxResponse();
  $response->addCommand(new SetSubtreesCommand($subtrees));
  // The Expires HTTP header is the heart of the client-side HTTP caching. The
  // additional server-side page cache only takes effect when the client
  // accesses the callback URL again (e.g., after clearing the browser cache
  // or when force-reloading a Drupal page).
  $max_age = 365 * 24 * 60 * 60;
  $response->setPrivate();
  $response->setMaxAge($max_age);
  $expires = new \DateTime();
  $expires->setTimestamp(REQUEST_TIME + $max_age);
  $response->setExpires($expires);
  return $response;
}

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