Same module working on localhost but not on the web server

Question

I created a module to hook the webform using the hook_form_alter.This converted the webform into AJAX form. This worked on localhost . But when I installed the same module to web server , it does not work.

This is the main code part of the module.

function alterwebform_form_alter(&$form, &$form_state, $form_id) {

if(strstr($form_id, 'webform_client_form_')) {  

$nid = $form['#node']->nid;

$form['actions']['submit']['#ajax'] = array(
  'callback' => 'alterwebform_webform_js_submit',
  'wrapper' => 'webform-client-form-' . $nid,
  'method' => 'replace',
  'effect' => 'fade',
);
}
 $form['actions']['submit']['#validate']= array('alterwebform_ajax_myform_validate');
}

//this is the callback function.

function alterwebform_webform_js_submit($form, $form_state) {

$sid = $form_state['values']['details']['sid'];

if ($sid) {

$node = node_load($form_state['values']['details']['nid']);

$confirmation = array(
  '#type' => 'markup',
  '#markup' => check_markup($node->webform['confirmation'], $node->webform['confirmation_format'], '', TRUE),
  );

return $confirmation;
}
else {

 return $form;
    }
  }

Any hint or suggestion please . Thank you .

Answer 1

What do you mean by "does not work"? I recommend that you use a tool like Firebug (and its NET panel) to debug what is happening with your AJAX call on the server and compare that with what happens on your local server.

Answer 2

The else clause in your ajax callback is returning the entire form; it's possible the else clause is being triggered rather than the if clause as you intend.

BTW, I'd avoid using the word "submit" in your ajax callback, as the submit callback and ajax callback are two different things.