$updateDepth = false;
$updatePathString = false;
$newParentTag = $mainTag->getParent();
$db = eZDB::instance();
$db->begin();
if ($tag->attribute('depth') != $mainTag->attribute('depth')) {
$updateDepth = true;
}
if ($tag->attribute('parent_id') != $mainTag->attribute('parent_id')) {
$oldParentTag = $tag->getParent();
if ($oldParentTag instanceof eZTagsObject) {
$oldParentTag->updateModified();
}
$updatePathString = true;
}
eZTagsObject::moveChildren($tag, $mainTag);
$synonyms = $tag->getSynonyms();
foreach ($synonyms as $synonym) {
$synonym->setAttribute('parent_id', $mainTag->attribute('parent_id'));
$synonym->setAttribute('main_tag_id', $mainTag->attribute('id'));
$synonym->store();
}
$tag->setAttribute('parent_id', $mainTag->attribute('parent_id'));
$tag->setAttribute('main_tag_id', $mainTag->attribute('id'));
$tag->store();
if (!$newParentTag instanceof eZTagsObject) {
$newParentTag = false;
}
if ($updatePathString) {
$tag->updatePathString($newParentTag);
}
