public function getContributors()
{
$c = $this->dbGetRow('SELECT * FROM slide_revision INNER JOIN users ON(slide_revision.user_id=users.id) WHERE slide_revision.id=:id', array('id' => $this->id));
if (count($c)) {
if ($c['based_on']) {
$temp = new Slide();
$temp->id = $c['based_on'];
return array_unique(array_merge($temp->getContributors(), array($c['user_id'] . '|' . $c['username'])));
}
return array($c['user_id'] . '|' . $c['username']);
} else {
return array();
}
}
