Force Serializer Symfony to return an array instead of an object

Question

There is my function :

private function responseJson($datas, $code)
{
    $serializer = $this->container->get('jms_serializer');
    $context = new SerializationContext();
    $context->setSerializeNull(true);
    $response = new Response($serializer->serialize($datas, 'json', $context->enableMaxDepthChecks()), $code);
    $response->headers->set('Content-Type', 'application/json');
    return $response;
}

I use serializer components of symfony. This is what my server do when I call this function. The client need an array but the server returns an object. Is it possible to force to return an array ?

Thanks for your answers !

You can possibly convert your object into an array before sending it as a response. See here — Dipen Shah
– Dipen Shah, Commented Dec 2, 2015 at 18:59
I already tried to cast $datas = (array)$datas. But it doesn't work — Yoann Picquenot
– Yoann Picquenot, Commented Dec 3, 2015 at 15:44
Such problem also may be relevant with stackoverflow.com/questions/55104868/… — Storm
– Storm, Commented Jul 3, 2019 at 12:30

Community · Accepted Answer · 2017-05-23 12:25:42Z

1

From what I read in the JsonSerializationVisitor the actual encoding is done with json_encode:

$result = @json_encode($this->getRoot(), $this->options);

As I can read in this post the forced creation of an array with json_encode cannot be done.

If your input data would be an array without indices, then json_encode would produce an array. That means that if key names in your data do matter, you cannot return an array to the client.

edited May 23, 2017 at 12:25

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answered Dec 2, 2015 at 19:12

Michał Tomczuk

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4 Comments

Yoann Picquenot Over a year ago

Okay, I consider again results given, and there are keys. So as you said, Client can't get an array. So I try an array_values($datas) to remove keys, but It doesn't work.

Michał Tomczuk Over a year ago

I've made a quick project in Symfony 2.7.7, installed jms/serializer-bundle and pasted your code into the controller. I've given that controller three different arrays treated with array_values. You can see the code here. No matter which array I choose, I always get an array as a response. I cannot imagine that your $datas array can cause the response to be an object, but maybe you can show an example of how it looks like?

Yoann Picquenot Over a year ago

Thanks for you for what you did. And what happened if $datas is already an object and not an array ? It will return an object, will it ?

Michał Tomczuk Over a year ago

Yes, it will. In order to get an array out of json_encode you must have an array with no indices as an input.

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