/**
* create a profile_list record for a tag, tagger pair
* if it doesn't exist, return it.
*
* @param integer $tagger the tagger
* @param string $tag the tag
* @param string $description description
* @param boolean $private protected or not
*
* @return Profile_list the people tag object
*/
static function ensureTag($tagger, $tag, $description = null, $private = false)
{
$ptag = Profile_list::getByTaggerAndTag($tagger, $tag);
if (empty($ptag->id)) {
$args = array('tag' => $tag, 'tagger' => $tagger, 'description' => $description, 'private' => $private);
$new_tag = Profile_list::saveNew($args);
return $new_tag;
}
return $ptag;
}