function savePost($postdata)
{
$id = htmlentities($postdata['id']);
$alias = Helper::createAlias($postdata['title']);
$title = htmlentities($postdata['title']);
$text = htmlentities($postdata['text']);
$posted_by = htmlentities($postdata['posted_by']);
$date = date("Y-m-d H:i:s");
$post = new PostModel();
$post->edit($id, $date, $title, $text, $posted_by, $alias);
$post->save();
}
