public function setting(EditorHandler $handler, Request $request, $instanceId)
{
$editorId = $request->get('editorId');
if (empty($editorId)) {
$editorId = null;
}
$handler->setInstance($instanceId, $editorId);
if (!($url = XeMenu::getInstanceSettingURIByItemId($instanceId))) {
return redirect()->back();
} else {
return redirect($url);
}
}