how to convert a json to a php object in symfony2?

Question

Via jquery, I ajax/POST this json

{"indices":[1,2,6]}:

to a symfony2 action. Right now I only really care for the array, so if this makes things considerably easier I could just post [1,2,6] as well.

How can I convert this to a php object?

Somehow, this does not work:

/**
 * @Route("/admin/page/applySortIndex", name="page_applysortindex")
 * @Method("post")
 * @Template()
 */
public function applySortIndexAction()
{
    $request = $this->getRequest();
    $j = json_decode($request->request->get('json'));
    $indices = $j->indices;
    return array('data'=> $indices);
}

gives a

Notice: Trying to get property of non-object in .../PageController.php line 64 (500 Internal Server Error)

which would be where I access $j->indices, where $j seems to be null

The poster:

$.ajax({
      type: 'POST',
      url: "{{ path('page_applysortindex')}}",
      data: $.toJSON({indices: newOrder}),
      success: ...

I guess you didn't use "json" as a name for this POST-parameter — Raffael
– Raffael, Commented Sep 9, 2011 at 11:25
I am not actively using any name at all, I'll post the js above... — Jan
– Jan, Commented Sep 9, 2011 at 11:30
Ah, so I have to write data: "data=" + $.toJSON({indices: newOrder}) and all is well. Probably there is a nicer solution for this. — Jan
– Jan, Commented Sep 9, 2011 at 11:37
you send a POST request but the JSON you send in the body, have look at my third edit — Raffael
– Raffael, Commented Sep 9, 2011 at 11:38
+1 for interesting question ... was wondering about that myself earlier that day — Raffael
– Raffael, Commented Sep 9, 2011 at 11:50

Raffael · Accepted Answer · 2011-09-09 11:43:37Z

5

To get the data sent via body use:

$request = $this->getRequest();
$request->getContent();

inspect the output and then act upon. but this will contain the json.

(yep, tested it. this leads to your json)

getting a POST-parameter with name json from within a controller:

$request = $this->getRequest();
$request->request->get('json');

Request-object

$j = json_decode('{"indices":[1,2,6]}');

var_dump($j);

leads to:

object(stdClass)#1 (1) {
  ["indices"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(6)
  }
}

edited Sep 9, 2011 at 11:43

answered Sep 9, 2011 at 10:55

Raffael

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4 Comments

Jan Over a year ago

Thanks a lot! Things can be so easy if you can ask the right guy :)

Jan Over a year ago

Arrgh, but how do I get to the json from the request?

Jan Over a year ago

I cannot seem to get to the json, still. I updated my question to show the actual method in question...

igorw Over a year ago

$json = json_decode($request->getContent(), true); - the true decodes your json to an array instead of a stdObj.

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