[support] [D6] ahah send the whole form on each change (editing cck nodes)

[Daniel Caillibaud]

Hi all,

I wanted to send an httpRequest for each change in taxonomy multiselect fields (when editing cck nodes).
I tried to add a ['#ahah'] param to all my taxonomy form entries, it works, but the WHOLE form is sent each time a select
change. I expected to send only the form entry concerned.

Is this "normal" or is there another way to do this with ahah ? (D6, cck 6.x-2.0-rc6)

At the end, I found a solution without ahah, writing an external js file instead of ahah params in drupal $form, but I'm
curious about ahah use.

My code :

// in my hook form_alter
  foreach ($form['taxonomy'] as $vid => $taxonomy_entry) {
      if ($taxonomy_entry['#type'] == 'select') {
        $form['taxonomy'][$vid]['#ahah'] = array(
          'path' => 'eduforge/taxonomy_change/' .$vid,
          'event' => 'change',
          'wrapper' => 'eduforge_taxonomy_change_output', 
          'method' => 'replace',
          'effect' => 'fade',
        );
      }
    }
 
// in hook menu
  $items['eduforge/taxonomy_change/%'] = array (
    'page callback' => 'eduforge_taxonomy_change',
    'page arguments' => array (2),
    'type' => MENU_CALLBACK,
    /// ...
  );
 
function eduforge_taxonomy_change($vid) {
  // here, $_POST contains the whole form
  // some code
  drupal_json(array('status' => TRUE, 'data' => $returned_datas));
}

Thanks for advices

Daniel