/**
* Add item to shortlist
*
* @param shortlist shortlist to perform action on.
* @param ID id of the object to add.
* @param type classname of the item to remove.
* @param session session id.
*
* */
public function performAction(ShortList $shortlist = null, $ID = false, $type = null, $session = false)
{
if (!$ID || is_null($type) || !$session) {
return false;
}
if (!$shortlist || !$shortlist->exists()) {
$shortlist = new ShortList();
$shortlist->SessionID = $session;
$shortlist->write();
}
// check whether the itme is already in the list
// before attempting to add it.
$existing = $shortlist->ShortListItems()->filter(array('ItemID' => $ID, 'ItemType' => $type));
// Item already exists, we're not going to add it again.
if ($existing->count() == 1) {
return $shortlist;
}
$shortlistItem = new ShortListItem();
$shortlistItem->ShortListID = $shortlist->ID;
$shortlistItem->ItemID = $ID;
$shortlistItem->ItemType = $type;
$shortlist->ShortListItems()->add($shortlistItem);
$shortlist->write();
return $shortlist;
}
