themekey.taxonomy.inc in ThemeKey 7.2

Provides some taxonomy stuff as ThemeKey properties.

@author Markus Kalkbrenner | bio.logis GmbH

@author profix898

See also

http://drupal.org/user/124705

http://drupal.org/user/35192

File

modules/themekey.taxonomy.inc

<?php

/**
 * @file
 * Provides some taxonomy stuff as ThemeKey properties.
 *
 * @author Markus Kalkbrenner | bio.logis GmbH
 *   @see http://drupal.org/user/124705
 *
 * @author profix898
 *   @see http://drupal.org/user/35192
 */

/**
 * Implements hook_themekey_properties().
 *
 * Provides additional properties for the Themekey module:
 * - taxonomy:vid
 * - taxonomy:tid
 * - taxonomy:tid_and_childs
 *
 * @return
 *   array of themekey properties and mapping functions
 */
function themekey_taxonomy_themekey_properties() {

  // Attributes for properties ;)
  $attributes = array();
  $attributes['taxonomy:vid'] = array(
    'description' => t('Taxonomy: Vocabulary - The vocabulary id (vid) of a taxonomy vocabulary. See !link for your vocabularies.', array(
      '!link' => l(t('!path', array(
        '!path' => 'admin/structure/taxonomy',
      )), 'admin/structure/taxonomy'),
    )),
    'validator' => 'themekey_validator_ctype_digit',
    'page cache' => THEMEKEY_PAGECACHE_SUPPORTED,
  );
  $attributes['taxonomy:tid'] = array(
    'description' => t('Taxonomy: Term - The term id (tid) of a taxonomy term.'),
    'validator' => 'themekey_validator_ctype_digit',
    'page cache' => THEMEKEY_PAGECACHE_SUPPORTED,
  );
  $attributes['taxonomy:tid_and_childs'] = array(
    'description' => t('Taxonomy: Term and its childs - The term id (tid) of a taxonomy term. If set, all child terms of this term will be used too.'),
    'validator' => 'themekey_validator_ctype_digit',
    'page cache' => THEMEKEY_PAGECACHE_UNSUPPORTED,
  );

  // Mapping functions
  $maps = array();
  $maps[] = array(
    'src' => 'taxonomy:tid',
    'dst' => 'taxonomy:vid',
    'callback' => 'themekey_taxonomy_tid2vid',
  );
  $maps[] = array(
    'src' => 'taxonomy:tid',
    'dst' => 'taxonomy:tid_and_childs',
    'callback' => 'themekey_taxonomy_tid2tid_and_parents',
  );
  $maps[] = array(
    'src' => 'node:nid',
    'dst' => 'taxonomy:tid',
    'callback' => 'themekey_taxonomy_nid2tid',
  );
  return array(
    'attributes' => $attributes,
    'maps' => $maps,
  );
}

/**
 * Implements hook_themekey_paths().
 */
function themekey_taxonomy_themekey_paths() {
  $paths = array();
  $paths[] = array(
    'path' => 'taxonomy/term/#taxonomy:tid',
  );

  // Add support for 'forum' paths
  if (module_exists('forum') && variable_get('themekey_module_forum_triggers_taxonomy_vid', 0)) {
    $paths[] = array(
      'path' => 'forum/#taxonomy:vid',
    );
  }
  return $paths;
}

/**
 * ThemeKey mapping function to set a
 * ThemeKey property's value (destination)
 * with the aid of another ThemeKey property (source).
 *
 * src: taxonomy:tid
 * dst: taxonomy:vid
 *
 * @param $tids
 *   array of taxonomy term ids or a single term id
 *
 * @return
 *   array of taxonomy vocabulary ids
 *   or NULL if no value could be mapped
 */
function themekey_taxonomy_tid2vid($tids) {
  $vid = array();

  // Use SQL instead taxonomy API because this code runs during hook_init() stage.
  // Using taxonomy API will require to load the node using node_load() which is not allowed in this stage.
  $tids = is_array($tids) ? $tids : array(
    $tids,
  );
  foreach ($tids as $tid) {
    $vid[] = db_select('taxonomy_term_data', 't')
      ->fields('t', array(
      'vid',
    ))
      ->condition('tid', $tid)
      ->execute()
      ->fetchField();
  }
  return count($vid) ? $vid : NULL;
}

/**
 * ThemeKey mapping function to set a
 * ThemeKey property's value (destination)
 * with the aid of another ThemeKey property (source).
 *
 * src: node:nid
 * dst: taxonomy:tid
 *
 * @param $nid
 *   node id
 *
 * @return
 *   array of taxonomy term ids
 *   or NULL if no value could be mapped
 */
function themekey_taxonomy_nid2tid($nid) {
  $tids = array();
  $query = db_select('taxonomy_index', 't');
  $query
    ->addField('t', 'tid');
  $query
    ->condition('t.nid', $nid);
  $result = $query
    ->execute();
  foreach ($result as $item) {
    $tids[] = $item->tid;
  }
  return count($tids) ? $tids : NULL;
}

/**
 * ThemeKey mapping function to set a
 * ThemeKey property's value (destination)
 * with the aid of another ThemeKey property (source).
 *
 * src: taxonomy:tid
 * dst: taxonomy:tid_and_parents
 *
 * @param $tids
 *   array of taxonomy term ids or a single term id
 *
 * @return
 *   array of taxonomy term ids
 *   or NULL if no value could be mapped
 */
function themekey_taxonomy_tid2tid_and_parents($tids) {

  /* It might be a bit confusing why the callback for 'taxonomy:tid_and_childs' is
   * called themekey_taxonomy_tid2tid_and_parents() and detects the parents for a
   * given tid. But it's correct to invert the logic here.
   * Example:
   * Term 17 has a child 27. The ThemeKey rule is "taxonomy:tid_and_childs = 17".
   * So if curent tid is 27, this callback function has to return it's parent 17
   * to cause a match in the rule engine.
   */
  $tids = is_array($tids) ? $tids : array(
    $tids,
  );
  $parents = array();
  foreach ($tids as $tid) {

    // note that taxonomy_get_parents_all() returns the term itself
    $parent_terms = taxonomy_get_parents_all($tid);
    foreach ($parent_terms as $parent_term) {
      $parents[] = $parent_term->tid;
    }
  }
  return count($parents) ? array_unique($parents) : NULL;
}

Functions

Name	Description
themekey_taxonomy_nid2tid	ThemeKey mapping function to set a ThemeKey property's value (destination) with the aid of another ThemeKey property (source).
themekey_taxonomy_themekey_paths	Implements hook_themekey_paths().
themekey_taxonomy_themekey_properties	Implements hook_themekey_properties().
themekey_taxonomy_tid2tid_and_parents	ThemeKey mapping function to set a ThemeKey property's value (destination) with the aid of another ThemeKey property (source).
themekey_taxonomy_tid2vid	ThemeKey mapping function to set a ThemeKey property's value (destination) with the aid of another ThemeKey property (source).