php - slim framework sending and recieving json -

im doing simple post, reason no matter do, cant read json data

$.ajax({         url: 'server/account/session',         type: 'post',         data: { "username": name, "password": password} ,         contenttype: 'application/json; charset=utf-8',         datatype: "json",         success: function (data) {             sessionstorage.accesstoken = data["token"];             sessionstorage.userid = data["userid"];             alert ( sessionstorage.accesstoken );         },           error: function () {          }     });  

data: {"username": "chips", "password": "potato"}

my php:

$result = json_decode($app->request->getbody(), true); var_dump($result); 

would result in null. don't why return null, sent json decode in php a. array, isnt im doing?

question two: 2) related question:

if send through jquery.post

            jquery.post("server/account/session", { "username": name, "password": password}, function(data){                 var result = json.parse(data);                   sessionstorage.accesstoken = result["token"];                 sessionstorage.userid = result["userid"];                  alert ( sessionstorage.accesstoken );             }); 

and recieve in php $userid = $app->request->params('username');

it works perfectly, question is, thought when post, data sent through body instead of header. how when jquery.post, can recieve app's request->params??

edit:

ok fixed problem. turn out if specify content type json. doesnt mean convert data json. had json.stringify on data.

but can me on second question?

answer question 2; not have json.stringify() @ all, when use right method:

var data = {     username: user,     password: pass }; $.ajax({     datatype: 'json',     method: 'post',     url: 'server/account/session',     data: data,     success: function (data) {       console.log(data);     } }) .always(function () {   $('body')     .removeclass('loading'); }); 

this should generate proper json-request automatically parsed $_post, $_request php in general , can understood slim.