Full text search in mongodb in Symfony 3.4

I'm trying to use full text search in mongodb:

db.Product.createIndex({"name": "text"})
db.Product.find({$text: {$search: "xxxxx"}})

how to use this in controller to symfony?

Thank you for all the answers. In summary, the controller for the search engine looks like the following:

class SearchController extends Controller
{
  public function searchBarAction()
  {
    $form = $this->createFormBuilder(null)
        ->setMethod('GET')
        ->add('search', TextType::class)
        ->getForm();

    return $this->render('AppBundle:Components:_searchBar.html.twig', [
        'form' => $form->createView()
    ]);
 }

/**
 * @param Request $request
 */
public function handleSearchAction(Request $request)
{

    $searchData = $request->query->get('form')['search'];


    $dbName = 'ece';
    $connection = $this->container->get('doctrine_mongodb')->getConnection();
    $mongo = $connection->getMongo();
    $db = $mongo->selectDB($dbName);

    $resultSetProduct = $db->Product->find([
        '$text' => ['$search' => $searchData]
    ]);

    $resultSet = $db->MainData->find([
        '$text' => ['$search' => $searchData]
    ]);

    $itemProduct =  $resultSetProduct->count();
    $itemSet = $resultSet->count() + $itemProduct;


    return $this->render('search/index.html.twig', [
        'searchData' => $searchData,
        'resultSetProduct' => $resultSetProduct,
        'itemProduct' => $itemProduct,
        'itemSet' => $itemSet,
        'resultSet' => $resultSet

    ]);
 }
}