Skip to main content

This site requires you to update your browser. Your browsing experience maybe affected by not having the most up to date version.

General Questions

General questions about getting started with SilverStripe that don't fit in any of the categories above.

Moderators: martimiz, Sean, biapar, Willr, Ingo, swaiba, simon_w

check for DataObjects on this page


2 Posts   359 Views


23 November 2011 at 5:46am Community Member, 95 Posts

I want to include a piece of custom javascript....But

I only want this to happen if BannerPage has items in the DataObject Banner.

$this->ShowBanner can successfully check on a field within BannerPage.

But i want to check if this BannerPage actually has images in the Dataobject called Banner

---banner.php dataobject --that holds field bannerimage
class Banner extends DataObject {


-- BannerPage --
class BannerPage extends Page {

public static $db = array(

   'ShowBanner' => 'Boolean'


class BannerPage_Controller extends Page_Controller {

   public function init() {


}else {




I previously did <% if Banners %> in template but i want to now add js via the Controller    instead

Maybe i need to add a function ??

public function CheckBanners() {
   return DataObject::get("Banner", "PageID = {$this->ID}");   

Ryan M.

23 November 2011 at 1:55pm Community Member, 309 Posts

I don't see any relationship between your BannerPage and the Banner object, such as has_one or has_many. But once you add a relationship, you can check for the existence of banners by doing this:

if($this->Banners()) {
//do something here