How to change layout for ajax requests in Zend Framework 2

1. Module.php

    public function onBootstrap(MvcEvent $e)
    {
        $e->getApplication()
          ->getEventManager()
          ->getSharedManager()
          ->attach(
              'Zend\Mvc\Controller\AbstractController',
              'dispatch',
              function ($e) {
                  $controller      = $e->getTarget();
                  if ($controller->getRequest() instanceof HttpRequest) {
                    if ($controller->getRequest()->isXmlHttpRequest()) {
                          $controller->layout('layout/ajax');
                    }
                  }
              },
              100
          );
    }

2. module.config.php Add the layout path

    'view_manager' => array(
        'template_map' => array(
            'layout/ajax' => __DIR__ . '/../view/layout/layout.ajax.phtml',
        ),
    ),