Convert an Array with objects in in it into a Json - php

Question

Actually I'm working with Symfony 2.8, an I'm trying to use AJAX to get information of an id given.
This is how I use Ajax in my html.twig :
$.ajax({
url: '{{ (path('questionsByAudit')) }}',
type: "POST",
dataType: "json",
data: {
"idAudit": $(this).attr('data-id')
},
async: true,
success: function (data)
{
console.log(data);
alert(data);
}
});
This Is my URL in my routing.yml:
questionsByAudit:
path: /QuestionsByAudit
defaults: { _controller: FSABundle:FsaPlan/FsaPlanByAuditor:getQuestions }
And this is the function in the controller:
public function getQuestionsAction(Request $request )
{
$em = $this->getDoctrine()->getEntityManager();
if($request->request->get('idAudit')){
$idAudit = $request->request->get('idAudit');
$Audit = $em->getRepository('FSABundle:FsaAudits')
->findBy(array('idAudit'=>$idAudit));
return new JsonResponse($Audit);
}
}
THe problem is that the next function returns this:
And this is what I get when I print the result in an alert:
This is what I get in console.log:
NOTE: I've read that the way to return the information of the controller to the ajax call should be as a JSON, but I think that what I get in $Audit is an array with objects inside, I don't know how to return that information to the Ajax correctly.
Any Idea or suggestion how can I get it?

Answer 1

In Controller Function Return Json Response.
use Symfony\Component\HttpFoundation\Response;
$result['success'] = "1";
$result['data'] = $data;
$result['message'] = "Successfully Update";
$response = new Response(json_encode($result));
return $response;

Answer 2

one simple approach would be to implement JsonSerializable on the objects you want to encode
class FsaAudits implements \JsonSerializable {
// ... all other content
public function jsonSerialize() {
return (array)$this; // this might only contain an empty array
}
}
however, it's better to actually control what is output (don't want truely internal data to leak):
public function jsonSerialize() {
return [
'idAudit' => $this->idAudit,
//...
];
}
another way would be to use Symfony's Serializer component.