Symfony send array with objects to javascript - php

Question

How is it possible to send an array of objects (entity) back to Javascript after an Ajax request?
If I return the array with the objects with a JSON response, the array is empty in Javascript.
Dump of array:
array:2 [
0 => App\Entity\Firewalls {#744
-id: 2
-ip: "test.com"
-user: "admin"
-pass: "pw"
-status: App\Entity\Status {#741
-id: 2
-status: "Finalize"
-update: null
-time: null
-firewall: App\Entity\Firewalls {#744}
}
}

Answer 1

Do you have composer require symfony/serializer ? if not I recommend you use it.
You can the use symfony object normalizer and serialize an entity (or array of entities) into a json.
Create a serializer:
use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Encoder\XmlEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;
$encoders = [new XmlEncoder(), new JsonEncoder()];
$normalizers = [new ObjectNormalizer()];
$serializer = new Serializer($normalizers, $encoders);
And use it with your entity or entities:
$this->serializer->serialize($data, 'json');
You can read more about this here.

Answer 2

I'd encode the json first like
$firewalls = [ 'your', 'firewalls' ];
$json = json_encode($firewalls);
echo $json;
then parse it back
$.ajax({
type: "POST",
url: "server.php",
dataType: "json",
success: function (firewalls) {
console.log(firewalls);
}
});
if the datatype is set as json, jQuery should automatically parse it. If it doesn't work, feel free to share what the browser's developer tools say.