There seem to be plenty of examples for using the data store API to persist widget items, but  none of these examples seem to completely work. Can someone just post a simple---working---example of posting a piece of data, getting it back via a callback, and then using it in the callback function to display it on screen. Thanks. 

Hey, I'll check in and see if we have anything avail for this.
Rhonda

i would like this too ^^ because i cant seem to get any data back, it always returns either [object object] or null, and i guess i am just doing something wrong

could someone please post an example of how to store a single string value, and then retrieve it and display it, that would probably clear it up a little for me, when i store a string, all i get back is an object.

 I have sent toa request to the content team. When it's accepted and put on someone's agenda, I'll update.

Rhonda

Nevermind, i have found a nice example on goolge code http://code.google.com/apis/opensocial/docs/0.8/devguide.html#Persistent , that shows how to store and retrieve the data, and i tested the code and it worked fully :)

there is an error somewhere in the code i will try and find it and upload the xml file to my server if i can fix it :)

nope no luck finding the error, anyone else want to try finding it, the xml document is uploaded at -removed link-

Hi,

I tried to execute the code at

http://code.google.com/intl/de-DE/apis/opensocial/docs/0.8/devguide.html#Persistent

but I am not able either to save and retrieve data on a viewer. If someone has an update about that please let me know.

Here is the code that gives "undefined" as answer.

Thanks in advance

    Claude

 <div id='loading'></div>
<div id='heading'></div>
<hr size='1px' />
<div id='main'></div>

<script type='text/javascript'>

var os;
var dataReqObj;
var html = '';
var heading = '';

function putData()
{
  dataReqObj = os.newDataRequest();
  var data1 = Math.random() * 5;
  dataReqObj.add(dataReqObj.newUpdatePersonAppDataRequest("VIEWER", "AppField1", data1));
  dataReqObj.add(dataReqObj.newUpdatePersonAppDataRequest("VIEWER", "AppField2", data1));
  dataReqObj.add(dataReqObj.newUpdatePersonAppDataRequest("VIEWER", "AppField3", data1));
  dataReqObj.send(handlePutData);
}

function handlePutData() {
     requestData();
}

function requestData()
{
  var fields = ["AppField1","AppField2","AppField3"];
  var p = {};
  dataReqObj = os.newDataRequest();
  var req = dataReqObj;

  p[opensocial.IdSpec.Field.USER_ID] = "VIEWER";
  var idSpec = opensocial.newIdSpec(p);
  dataReqObj.add(req.newFetchPersonRequest(opensocial.IdSpec.PersonId.VIEWER), "viewer");
  dataReqObj.add(req.newFetchPersonAppDataRequest(idSpec, fields), "viewer_data");
  dataReqObj.send(handleRequestData);
}

function handleRequestData(data){
     if (data.hadError()) {
     alert(data.getErrorCode() + '\n' + data.getErrorMessage());
     return;
     }
     var viewer_data = data.get("viewer_data");
     var viewer = data.get("viewer");
     doSomethingWithMyData(viewer,viewer_data);
}

function doSomethingWithMyData(viewer,data) {
  var mydata = data.getData();
  var me = viewer.getData();

 var id = me.getId().substr(12, me.getId().length);
  html = "AppField1 data for user is: " +mydata[id]["AppField1"]+"<br />";
  document.getElementById('main').innerHTML = html;
}

function init() {
    os = opensocial.Container.get();
   putData();

}

init();
</script>