When modifying the last lines to the following code, users are redirected to the term's page at its correct path alias.
This is working fine even with pathauto and taxonomy_redirect.

  // Or redirect the user?
  $tid = (is_array($value)) ? reset($value) : $value; // If multiple values are selected, use the first.
  $term_path_alias = drupal_get_path_alias( taxonomy_term_path( taxonomy_get_term($tid) ) );
  drupal_goto($term_path_alias);

Thanks a lot for the module and this filter block code!

The above code - written for D6 - can also be used with Hierarchical Select 5.x-3.7.

All yo have to do is to change two lines:

function hs_taxonomy_filter_block_form($form_state) {

should become

function hs_taxonomy_filter_block_form() {

And

function hs_taxonomy_filter_block_form_submit($form_id, &$form_state) {
  $value = $form_state['values']['filter'];

mut be changed to

function hs_taxonomy_filter_block_form_submit($form_id, $form_values) {
  $value = $form_values['filter'];

Is there any way to combine this with CCK fields? More specifically, I'd like to accomplish the following:

I have a product (ubercart product), that has three fields.

1) First one is using Hierarchical Select to select manufacturer/category/subcategory (all defined in taxonomy)
2) Second field is the series number
3) Third field is the part number

Using the above sample, I'm able to accomplish the first part, which deals with taxonomies. Is it possible to modify this sample module to include the cck fields in the drop downs too?

Thanks for any help

Is there any way to alter the vid to vids so it can pull multiple vocabularies? I have been playing with it but have not gotten the syntax to work right.

Thanks for anyone that may reply.

Very usefull!
But after submission select became empty.
How hs can remember lineage selected?

thanks

Yet again, you seem to know exactly what I'm looking for! Amazing stuff, thanks a lot!

I've implemented a Jump menu using this, and a little custom jquery - I was so lucky to have stumbled across this, while trying to write my own module which does exactly what this little module does!

Like I said, amazing.

Thank you for your script, but i want to get terms only that are associated with nodes.

I use this script, with options below enabled:

      'entity_count'    => 1,
      'require_entity'  => 1,

but nothing happens. What do i do wrong?

ps. I have modify this script for D7.

I'm having trouble setting a root term. I have a vocabulary like the following:

Parent 1
--Child 1
Parent 2
--Child 2
----Grandchild 2
------GGrandchild 2
----Grandchild 2-2
Parent 3
--Child 3

I want the dropdown only to show Parent 2 and its subcategories, so I figured I could change this from NULL to 35 since Parent 2 is term 35, but it doesn't change anything:

'root_term' => 35, // Enter a term ID here if you want to display only terms below the term with that ID.

Any ideas?

Has anyone successfully ported this to D7?

//----------------------------------------------------------------------------
// Drupal core hooks.

/* =============================================================================
   Blocks
   ========================================================================== */

/**
 * Implements hook_block_info().
 */
function hs_taxonomy_filter_block_block_info() {
	$blocks['hs-taxonomy-filter'] = array(
      'info'   => t('Hierarchical Select term filter'),
      'weight' => 0,
      'region' => 'left',
    );
	return $blocks;
}

/**
 * Implements hook_block_view().
 */
function hs_taxonomy_filter_block_block_view($delta = '') {
	$block = array();
	switch($delta) {
		case 'hs-taxonomy-filter':
			$block['subject'] = t('Filter by term');
			$block['content'] = drupal_get_form('hs_taxonomy_filter_block_form');
		break;
	}
	return $block;
}


//----------------------------------------------------------------------------
// Forms API callbacks.


/**
 * Form definition function; Hierarchical Select Taxonomy Filter Block form.
 */
function hs_taxonomy_filter_block_form($form_state) {
  $vid = 1;
  $form['filter'] = array(
    '#type' => 'hierarchical_select',
    '#title' => t('Select the tag you wish to use.'),
    '#size' => 1,
    '#config' => array(
      'module' => 'hs_taxonomy',
      'params' => array(
        'vid' => $vid,
      ),
      'save_lineage'    => 0,
      'enforce_deepest' => 0,
      'entity_count'    => 0,
      'require_entity'  => 0,
      'resizable'       => 0,
      'level_labels' => array(
        'status' => 0,
        'labels' => array(
          0 => t('Main category'),
          1 => t('Subcategory'),
          2 => t('Third level category'),
        ),
      ),
      'dropbox' => array(
        'status'   => 0,
        'title'    => t('All selections'),
        'limit'    => 0,
        'reset_hs' => 1,
      ),
      'editability' => array(
        'status'           => 0,
        'item_types'       => array(),
        'allowed_levels'   => array(
          0 => 0,
          1 => 0,
          2 => 1,
        ),
        'allow_new_levels' => 0,
        'max_levels'       => 3,
      ),
      // These settings cannot be configured through the UI: they can only be
      // overridden through code.
      'animation_delay'    => 400,
      'special_items'      => array(),
      'render_flat_select' => 0,
    ),
  );

  $form['apply'] = array(
    '#type' => 'submit', 
    '#value' => t('Apply'),
  );

  return $form;
}

/**
 * Form submit callback; Hierarchical Select Taxonomy Filter Block form.
 */
function hs_taxonomy_filter_block_form_submit($form_id, &$form_state) {
  $value = $form_state['values']['filter'];

  // Create an array containing all the term names that have been selected.
  // Even when only a single term has been submitted (i.e. when the dropbox is
  // disabled).
  $terms = array();
  if (is_array($value)) {
    foreach ($value as $term_id) {
      $term = taxonomy_term_load($term_id);
      $terms[] = $term->name;
    }
  }
  else {
    $term = taxonomy_term_load($value);
    $terms[] = $term->name;
  }
  // Maybe you want to display a message?
  $output = t('The following term(s) have been selected: !terms.', array('!terms' => implode(', ', $terms)));
  drupal_set_message($output);

  // Or redirect the user?
  $tid = (is_array($value)) ? reset($value) : $value; // If multiple values are selected, use the first.
  drupal_goto("taxonomy/term/$tid");
}