function AjaxRenderer::renderResponse

Overrides MainContentRendererInterface::renderResponse

File

core/lib/Drupal/Core/Render/MainContent/AjaxRenderer.php, line 49

Class

AjaxRenderer

Default main content renderer for Ajax requests.

Namespace

Code

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 = $this->renderer
        ->renderRoot($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 = [
        '#type' => 'status_messages',
    ];
    $output = $this->renderer
        ->renderRoot($status_messages);
    if (!empty($output)) {
        $response->addCommand(new PrependCommand(NULL, $output));
    }
    return $response;
}