File Upload with GeoEXT FormPanel

Question

I have a GeoExt form and want to do file upload here. But i never work with GeoEXT. I have this.

buttons: [{
text: 'Загрузить',
handler: function(){
if(fp.getForm().isValid() && Ext.getCmp('opinions').getValue()=="blabla"){
form_action=1;
fp.getForm().submit({
         url: '<portlet: actionURL>',
         waitMsg: 'WAITING...',
 success: function(fp, o) {
          DO SOMETHING
          }
         }
        }
      }]

This is correct? What arguments use in success: function(fp, o)? First argument is FormPanel but i dont understand what is second. Another question how to do asynchronous file upload in this case?

Answer 1

i think "o" is result of your process. if not, you can easily learn what it is with firebug...

  ...  
  success: function(fp, o) {
      consolo.log(o)
                 };

and you can check out exm. about file upload with geoext here.

i hope it helps you...