/**
* Add a Newsfeed item.
*
* @static
* @param Model_User $user
* @param string $class e.g. 'user'
* @param string $type e.g. 'login'
* @param array $data Data to be user with item
* @return boolean
*/
protected static function add(Model_User $user, $class, $type, array $data = null)
{
$item = new Model_NewsfeedItem();
// Update item if previous added less than time window specified time
$update = DB::update($item->get_table_name())->set(array('stamp' => time()))->where('user_id', '=', $user->id)->and_where('class', '=', $class)->and_where('type', '=', $type)->and_where('stamp', '>', strtotime(Newsfeed::UPDATE_WINDOW));
$data ? $update->and_where('data', '=', @json_encode($data)) : $update->and_where('data', 'IS', null);
// Update any?
if ($update->execute()) {
return true;
}
// No new enough item found, insert
$item->set_fields(array('user_id' => $user->id, 'class' => $class, 'type' => $type, 'data' => $data, 'stamp' => time()));
$item->save();
return $item->loaded();
}
