Callback problems using Codeigniter and ScriptTagProxy

[scottmartin]

I am trying to get my grid to load data using ScriptTagProxy. I am able to see the JSON records in FB:Net:HTML:Response.

Under Params I see stcCallback1001. The GET is displaying the param as:

http://10.0.0.100/bms-hr/index.php/users/list_users/?_dc=1284415387926&callback=stcCallback1001

store info:

var remoteProxy = new Ext.data.ScriptTagProxy({
  api: {
    read : 'index.php/users/list_users/',
    create : 'index.php/users/insert_users/',
    update: 'index.php/users/update_users/',
    destroy: 'index.php/users/delete_users/'
  }
});

var dataStore = new Ext.data.JsonStore({
  proxy: remoteProxy,
  root: 'users',
  autoLoad: true,
  autoSave: false,
  successProperty : 'success',
  totalProperty : 'totalCount',
  messageProperty: 'message',
  idProperty: 'id_user',
  writer: writer,
  fields: userFields
});

CI:Controller: users.php

 function list_users() {
    $data = json_encode($this->User_model->list_users());
    $cb = isset($_GET['callback']) ? $_GET['callback'] : '';
    print $cb . '(' . $data . ')';
  }

$_GET['callback'] is not returning a value from my controller file.

Is CI causing this, or my code?

Regards,
Scott.

[scottmartin]

FYI,
Seems CI disables _GETS. I used _REQUEST and all is well.

Regards,
Scott.

[Animal]

But why are you using a ScriptTagProxy? I see relative URLs there which will go to the page's origin domain.

[scottmartin]

Animal,

I 'thought' I read in the forums this was the preferred method in my approach. Could I get you to explain in more detail on why this not correct? Should I be using httpProxy?

I am still trying to decipher ExtJS as I go. (even after numerous rtfm sessions)

Thanks for the help!

Regards,
Scott.

[Animal]

Well it uses a <script> element to communicate. Which is why you are forced to pass the data into a callback: The result must be executable Javascript.

if you used an HttpProxy, you just return JSON.

[scottmartin]

Animal,

Thanks for the tip. For anyone watching:

var proxy = new Ext.data.HttpProxy({
  method: 'POST',
  url : 'index.php/employees/list_employees/'
});

This also follows CI in not using GET approach.

Regards,
Scottl