Only AHAH javasript settings are send back

A patch for both bugs is attached. However, the file bug is also listed #368328: caching of built forms prevents form_state['values'] to be populated from $_POST with a patch for just that.

Forgot to change status

Anyone maintaining this?

Not me. I just rolled a patch based upon the existing description.

I am. But not frequently enough, I know. I've got so many stuff going on to balance between. And Hierarchical Select has about 5 times more uses than this module, so over the past few weeks, I've focused on that module. I'll make this module my focus the next few weeks!

This:

   'settings' => array('ahah' => $settings['ahah']),

is *by design*. Otherwise you end up with nasty things: new settings would override old settings, which can cause *a lot* of problems. I've had to fix this very bug (because the way it currently works, it's *not* a bug) in several modules because it caused problems with others.

AHAH in Drupal still sucks, I'm afraid, there isn't a solid/complete enough framework in core yet! :( This is one of those things that sucks.

I confirm that restriction to just '#ahah' settings makes problems for other behaviors using Drupal.settings that can be changed after reload. tabledrag and date_popup elements are just two examples. If on the other hand, you experience states that there can be problems with other modules I would suggest at least to add configuration allowing to developer to choose setting branches that should be reloaded. I will send patch for this a bit later but will be glad to here feedback about this idea.

Here is a patch implementing this configuration. Configured setting names are stored in regular Drupal variable and edited through administration settings form

Sometimes drupal_render can add more javascript setting with calling drupal_add_js by other modules like cck, for example function theme_content_multiple_values() in content.module.

In this case we must render the form before fetching javascript settings, something like this:

function ahah_helper_render($form_item_to_render = FALSE) {
  ...

  // Get the form item we want to render.
  $form_item = _ahah_helper_get_form_item($form, $form_item_to_render);

  $rendered = drupal_render($form_item);

  // Get the JS settings so we can merge them.
  $javascript = drupal_add_js(NULL, NULL, 'header');

  $settings = call_user_func_array('array_merge_recursive', $javascript['setting']);

  drupal_json(array(
    'status'   => TRUE,
    'data'     => theme('status_messages') . $rendered,
    'settings' => $settings,
  ));