function forum_node_presave in Drupal 7

Same name and namespace in other branches

1. 8 core/modules/forum/forum.module \forum_node_presave()
2. 9 core/modules/forum/forum.module \forum_node_presave()

Implements hook_node_presave().

Assigns the forum taxonomy when adding a topic from within a forum.

File

modules/forum/forum.module, line 327

Provides discussion forums.

Code

function forum_node_presave($node) {
  if (_forum_node_check_node_type($node)) {

    // Make sure all fields are set properly:
    $node->icon = !empty($node->icon) ? $node->icon : '';
    reset($node->taxonomy_forums);
    $langcode = key($node->taxonomy_forums);
    if (!empty($node->taxonomy_forums[$langcode])) {
      $node->forum_tid = $node->taxonomy_forums[$langcode][0]['tid'];
      if (isset($node->nid)) {
        $old_tid = db_query_range("SELECT f.tid FROM {forum} f INNER JOIN {node} n ON f.vid = n.vid WHERE n.nid = :nid ORDER BY f.vid DESC", 0, 1, array(
          ':nid' => $node->nid,
        ))
          ->fetchField();
        if ($old_tid && isset($node->forum_tid) && $node->forum_tid != $old_tid && !empty($node->shadow)) {

          // A shadow copy needs to be created. Retain new term and add old term.
          $node->taxonomy_forums[$langcode][] = array(
            'tid' => $old_tid,
          );
        }
      }
    }
  }
}