Re: [development] AJAX return values

1 May 2006


      thanks for the quick response.  Is there some code you could point me at?

Thanks,

Dan
...
Use drupal_to_js on the server and parseJson on the client to transfer
serialized data in the server->client direction. I also like to send
serialized JS to the server, but this requires external JSON libraries
(both client and server side).
-Robert
Dan Robinson wrote:
...
I am trying to get some AJAX stuff to work -
javascript function -
function setMapContacts(uri, groupname) {
     HTTPGet(uri+"/"+groupname, addContactsToMap, "") ;
}
this is the PHP function that gets called as a result of the above
HTTPGet -
function getContacts($GroupName) {
  $contacts = getContactsInGroup($GroupName);
  print drupal_to_js($contacts);
  exit();
}
Here is the callback .js function  I don't think I understand the
correct way to format the callback - "contacts" has no value -
function addContactsToMap(httpresponse, xmlhttp, contacts) {
  if (xmlhttp.status != 200) {
    return alert('An HTTP error '+ xmlhttp.status +' occured.\n'+
httpresponse.uri);     }  ;
    map.clearOverlays();
    alert(httpresponse);
}
and I get a dump in httpresponse - the dump has the data i want in it -
but I would much rather be dealing with a javascript array :).  How do I
get a javascript array?  Is there a cast I have to do?
Thanks,
Dan