symfony 2 twig access array javascript index

Question

Is it possible to get object from twig array knowing that the index is a javascript variable

Mycontroller

public function showContactModalAction($iduser, $profil) {
    $em = $this->getDoctrine()->getEntityManager();
    $contacts = $em->getRepository("LeymaxContactBundle:User")->findBy(array('accesslevel' => 'arch'));

    return $this->render('LeymaxContactBundle:Default:contactModal.html.twig', array('contacts' => $contacts));
}

MyTwig

 $(".fils_zone_livre").on('click', function() {
        var index=3;
        var contacts = '{{contacts[index]}}';

    });

and I tried also:

var contactArray = '{{contacts|json_encode}}';

but i get this reponse:

[{},{},{},{},{},{}]

as an empty array

It seems you are looking for an entity serializer instead of json_encode. What about jms/serializer? — Touki
– Touki, Commented Dec 6, 2013 at 15:10

praxmatig · Accepted Answer · 2013-12-07 14:32:06Z

1

You can use JMSSerializerBundle to serialize your entities instead of json_encode.

var contactsArray = JSON.parse("{{ contacts|serialize('json') }}");
var contact = contactsArray[index];

answered Dec 7, 2013 at 14:32

praxmatig

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Comments

Hennes · Accepted Answer · 2014-04-15 10:44:27Z

1

Just needed almost the same as you.

But instead of

var contactArray = '{{contacts|json_encode}}';

you should use

var contactArray = '{{contacts|json_encode|raw}}';

Hope this helps.

Hennes

answered Apr 15, 2014 at 10:44

Hennes

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Comments

undefined · Accepted Answer · 2013-12-06 13:14:54Z

0

$(".fils_zone_livre").on('click', function() {
    var index=3;
    var contactsArray = {{ contacts|e('js') }};
    var contacts = contactsArray[index];
});

This should work. Twig parses the template on the server, before the javascript is executed, so it can't know about js variables.

answered Dec 6, 2013 at 13:14

undefined

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2 Comments

user2784013 Over a year ago

thank you for your answer , i try it but i get this error Twig_Error_Runtime: An exception has been thrown during the rendering of a template ("Notice: Array to string conversion in C:\wamp\www\LeymaxWeb\app\cache\dev\twig\f9\f1\dcbafef3211e582ab150327ba1c59cbf3008c51290dd41d694c2b2ec9717.php line 245") in LeymaxContactBundle:Default:contactModal.html.twig at line 179.

undefined Over a year ago

The contacts var should be JSON encoded. You can use json_encode

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