Hey all, I've been going backwards and forwards through the wiki trying to find answers. Not sure if its me or Silver Stripe, so I ended up here.

Following this http://doc.silverstripe.com/doku.php?id=recipes:imageupload I've tired having this class in my dataobject, a gallery page, and finally thought it'd be best to have it self contained in its own file named "GalleryImage.php" with the following

class GalleryImage extends Image
{
   function generateLarge($gd) {
      $gd->setQuality(100);
      return $gd->resizeRatio(350,500);
   }

   function generateThumb($gd) {
      $gd->setQuality(100);
      return $gd->paddedResize(100,100);
   }

}

I always get call to member function on a non object. Am I naming the class incorectly? Some how the GD class isn't being accessed? Any light on the topic would be great. I'm using SS 2.3.3

P.S
I'm using uncle cheese's dataobject manager to allow for image caption and stuff, I'm associating the attachment with my GalleryImage like so

   static $has_one = array (
      'Attachment' => 'GalleryImage',
      'GalleryPage' => 'GalleryPage'
   );
   

Thats good to hear that you've got it working, should hopefully mean I can to.
The code in the template is

      <img src="{$Attachment.Large.URL}" title="$Name" caption="$Caption"/>

I tried $Attachment.generateLarge.URL for the sake of it but get the same error.

Well I'm obviously missing something somewhere, I just installed the Image Gallery model and it works fine... I'll keep reading and trying.