convert object to json data from sql

Question

I want to convert data object to json form, this is my code in symfony,

 $connection = $em->getConnection();
    $statement = $connection->prepare("select * from contact where id_user=$id");
    $statement->execute();
    $contacts = $statement->fetchAll();

and in rendering object, I do this,

return $this->render('...index.html.twig', array('form' => $form->createView(), 'errors' => $form->getErrors(), 'contacts'=>json_encode($contacts)));

but this does not work, any help please

Answer 1

Try this:

$contacts= json_encode($contacts);
$Response = new Response(
  '...myTemplate.html.twig',
  ['form' => $form->createView()],
  ['errors' => $form->getErrors()],
  ['contacts' => $contacts]
);
$Response->headers->set('Content-Type', 'application/json');
return $oResponse;

Don't forget to use:

use Symfony\Component\HttpFoundation\Response;

Or you can use the JsonResponse Class. Here's the documentation: symfony doc