Forum taxonomy is always required

Hi
For a more permanent solution, you can implement hook_form_alter in a custom module to set this.

/**
 * Implements hook_form_FORM_ID_alter() for forum_node_form().
 */
function MYMODULE_form_forum_node_form_alter(&$form, $form_state) {
  $node = $form_state['node'];
  $langcode = entity_language('node', $node); 
  $form['taxonomy_forums'][$langcode]['#required'] = FALSE;
}

Marking as works as designed as this is a specific use case, the generic use case is for forum-node-types to require the taxonomy.
Lee

I added this:

$form['taxonomy_forums']['und']['#required'] = FALSE;

to a module as described above and that doesn't actually work.

Also, changing the weights of the module that I added that to does not help either.

The UI is likewise unable to override the line 625 in forum.module that sets this requirement to TRUE.

At this time the only way I have found to correct this is to hack the module as in #1.

EDIT: I also added this in both hook_form_alter and hook_form_FORM_ID_alter and though the code inside these functions is executed as expected, the requirement stays the same until you comment out line 625 where the reuirement is set to TRUE...

One More EDIT: We only have the forum content type on this system so I doubt it has to do with the content types that you use the field on.

Sorry to nag but the only way I could fix this for one of my sites was to change the core forum.module.

Still nagging. No longer sorry to do so. This bug has been around for two years now and it forces me to change a core module every time Drupal core changes.

Note that it is a bug as field settings are automatically over-written.

I was able to make the module work by changing weights as per https://www.drupal.org/node/110238 where the '[the_other_module_name]' is 'forum'.
To keep this field required for Forums I used hook_form_alter() to set $form['taxonomy_forums'][$langcode]['#required'] to FALSE if $form_id != 'forum_node_form'.

Still does not solve GUI issue!

The form_alter approach works, but you need to play a bit with the module weights or use the hook_module_implements_alter(), see: https://api.drupal.org/api/drupal/modules!system!system.api.php/function/hook_module_implements_alter/7.x

However if you set the field as not required, then you can get this warning: #1621334: Notice: Undefined property: stdClass::$forum_tid in forum_node_view() .