SilverStripe, last guestbook entry in the sidebar or homepage - module

Question

Does anyone knows how or point me in the direction to show the last guestbook entry (using the simple guestbook module) in the sidebar or homepage?
trying to have a go, I've put in HomePage.php this function
function LastGuest($nume=1) {
$guest = DataObject::get_one("Guestbook");
return ($guest) ? DataObject::get("GuestbookEntry", "", "Date DESC", "", $nume) : false;
}
and in HomePage.ss this:
<% control LastGuest %>
<div class="newsList">
<h2 class="newsTitle">$Title.XML</h2>
<article class="newsSummary">$Comment</article>
</div>
<% end_control %>
But it doesn't work. I get a 500 error. Any idea?
Thanks in advance.

Answer 1

This works for me. First see if you have a page of class Guestbook, grab the ID of the page. Then use that ID in the arguments to GuestbookEntry::getEntryList.
function LastGuest() {
if ($guestbook = DataObject::get_one('GuestBook')) {
$id = $guestbook->ID;
$params = array(
'filter' => 'IsActive = 1 AND IsSpam = 0 AND GuestbookID = ' . $id,
'sort' => 'Created DESC',
'limit_start' => 0,
'limit_end' => 1,
'comments' => false,
'cryptmail' => false,
'emoticons' => false,
);
$entries = GuestbookEntry::getEntryList($params);
return $entries;
}
return;
}