AjaxRenderer.php in Zircon Profile 8
Same filename and directory in other branches
Namespace
Drupal\Core\Render\MainContentFile
core/lib/Drupal/Core/Render/MainContent/AjaxRenderer.phpView source
<?php
/**
* @file
* Contains \Drupal\Core\Render\MainContent\AjaxRenderer.
*/
namespace Drupal\Core\Render\MainContent;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\AlertCommand;
use Drupal\Core\Ajax\InsertCommand;
use Drupal\Core\Ajax\PrependCommand;
use Drupal\Core\Render\ElementInfoManagerInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Symfony\Component\HttpFoundation\Request;
/**
* Default main content renderer for Ajax requests.
*/
class AjaxRenderer implements MainContentRendererInterface {
/**
* The controller resolver.
*
* @var \Drupal\Core\Controller\ControllerResolverInterface
*/
protected $controllerResolver;
/**
* The element info manager.
*
* @var \Drupal\Core\Render\ElementInfoManagerInterface
*/
protected $elementInfoManager;
/**
* Constructs a new AjaxRenderer instance.
*
* @param \Drupal\Core\Render\ElementInfoManagerInterface $element_info_manager
* The element info manager.
*/
public function __construct(ElementInfoManagerInterface $element_info_manager) {
$this->elementInfoManager = $element_info_manager;
}
/**
* {@inheritdoc}
*/
public function renderResponse(array $main_content, Request $request, RouteMatchInterface $route_match) {
$response = new AjaxResponse();
if (isset($main_content['#type']) && $main_content['#type'] == 'ajax') {
// Complex Ajax callbacks can return a result that contains an error
// message or a specific set of commands to send to the browser.
$main_content += $this->elementInfoManager
->getInfo('ajax');
$error = $main_content['#error'];
if (!empty($error)) {
// Fall back to some default message otherwise use the specific one.
if (!is_string($error)) {
$error = 'An error occurred while handling the request: The server received invalid input.';
}
$response
->addCommand(new AlertCommand($error));
}
}
$html = $this
->drupalRenderRoot($main_content);
$response
->setAttachments($main_content['#attached']);
// The selector for the insert command is NULL as the new content will
// replace the element making the Ajax call. The default 'replaceWith'
// behavior can be changed with #ajax['method'].
$response
->addCommand(new InsertCommand(NULL, $html));
$status_messages = array(
'#type' => 'status_messages',
);
$output = $this
->drupalRenderRoot($status_messages);
if (!empty($output)) {
$response
->addCommand(new PrependCommand(NULL, $output));
}
return $response;
}
/**
* Wraps drupal_render_root().
*
* @todo Remove as part of https://www.drupal.org/node/2182149.
*/
protected function drupalRenderRoot(&$elements) {
return drupal_render_root($elements);
}
}
Classes
Name | Description |
---|---|
AjaxRenderer | Default main content renderer for Ajax requests. |