function hook_taxonomy

6.x core.php hook_taxonomy($op, $type, $array = NULL)

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 $array. Possible values:

"delete"
"insert"
"update"

$type: What manner of item $array 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

Hooks: Allow modules to interact with the Drupal core.

2 functions implement hook_taxonomy()

Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

forum_taxonomy in drupal-6.x/modules/forum/forum.module: Implementation of hook_taxonomy().
trigger_taxonomy in drupal-6.x/modules/trigger/trigger.module: Implementation of hook_taxonomy().

10 invocations of hook_taxonomy()

blogapi_metaweblog_get_category_list in drupal-6.x/modules/blogapi/blogapi.module: Blogging API callback. Returns a list of the taxonomy terms that can be associated with a blog node.
blogapi_mt_get_post_categories in drupal-6.x/modules/blogapi/blogapi.module: Blogging API callback. Returns a list of the taxonomy terms that are assigned to a particular node.
hook_search in documentation-6.x/developer/hooks/core.php: Define a custom search routine.
node_filters in drupal-6.x/modules/node/node.admin.inc: List node administration filters that can be applied.
node_filter_form in drupal-6.x/modules/node/node.admin.inc: Return form for node administration filters.

... See full list

File

documentation-6.x/developer/hooks/core.php, line 2090: 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']);
    }
  }
}