function hook_taxonomy

Act on taxonomy changes.

This hook allows modules to take action when the terms and vocabularies in the taxonomy are modified.

Parameters

$op: What is being done to $object. Possible values:

• "delete"
• "insert"
• "update"

$type: What manner of item $object is. Possible values:

• "term"
• "vocabulary"

$array: The item on which $op is being performed. Possible values:

• for vocabularies, 'insert' and 'update' ops: $form_values from taxonomy_form_vocabulary_submit()
• for vocabularies, 'delete' op: $vocabulary from taxonomy_get_vocabulary() cast to an array
• for terms, 'insert' and 'update' ops: $form_values from taxonomy_form_term_submit()
• for terms, 'delete' op: $term from taxonomy_get_term() cast to an array

Return value

None.

Related topics

File

developer/hooks/core.php, line 1328

These are the hooks that are invoked by the Drupal core.

Code

function hook_taxonomy($op, $type, $array = NULL) {
  if ($type == 'vocabulary' && ($op == 'insert' || $op == 'update')) {
    if (variable_get('forum_nav_vocabulary', '') == '' && in_array('forum', $array['nodes'])) {

      // since none is already set, silently set this vocabulary as the
      // navigation vocabulary
      variable_set('forum_nav_vocabulary', $array['vid']);
    }
  }
}