private function groupHeroes(&$heroes)
{
$primaryAttributes = PrimaryAttributePeer::retrieveAll();
$_heroes = $heroes;
$grpHeroes = array();
foreach ($primaryAttributes as $iObj) {
$grpHeroes[$iObj->getName()] = array();
}
foreach ($_heroes as $hero) {
$attribute = $hero->getPrimaryAttribute();
$grpHeroes[$attribute->getName()][] = $hero;
}
$heroes = $grpHeroes;
// return
}
