Change formset default from collapsed to exanded?

Question

I'm working with the Support Ticketing System module in Drupal 7. My clients would like to be able to see at a glance who is subscribed to notifications on a ticket. The Subscribed field is collapsed by default, meaning the client has to click on the Subscribed link to expand the field to see the users subscribed.

How can I change this so that the field is expanded when the page loads, and save my clients a click?

EDIT: The node is variable--when creating a new support ticket, it will be /node/add/support-ticket. After the ticket has been created, it could be anything.

But the particular fieldset I want to target will always have the id "edit-subscribed".

Answer 1

A simple hook_form_BASE_FORM_ID_alter() invocation can alter the default properties of the form. If you inspect the form array you'll see that the fieldset is stored in $form['subscribe']['subscribed']. By setting the #collapsible element to FALSE, the or #collapsed element to FALSE (if you want to retain collapsibility), the default behavior will be to keep the fieldset open.

For example:

function MYMODULE_form_support_ticket_node_form_alter(&$form, &$form_state, $form_id) {
  // Replace #collapsible with #collapsed to retain collapsibility.
  $form['subscribe']['subscribed']['#collapsible'] = FALSE;
}