/**
* Create an object and load user badge.
*
* <code>
* $keys = array(
* "user_id" => 1,
* "group_id" => 2
* );
* $userBadge = Gamification\User\Badge::getInstance(\JFactory::getDbo(), $keys);
* </code>
*
* @param \JDatabaseDriver $db
* @param array $keys
* @param array $options
*
* @return null|self
*/
public static function getInstance(\JDatabaseDriver $db, array $keys, array $options = array())
{
$userId = ArrayHelper::getValue($keys, "user_id");
$groupId = ArrayHelper::getValue($keys, "group_id");
$index = md5($userId . ":" . $groupId);
if (!isset(self::$instances[$index])) {
$item = new Badge($db);
$item->load($keys, $options);
self::$instances[$index] = $item;
}
return self::$instances[$index];
}
