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.

We're retiring the forums!

The SilverStripe forums have passed their heyday. They'll stick around, but will be read only. We'd encourage you to get involved in the community via the following channels instead:

Template Questions /

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

Image Resize Question

Go to End

2 Posts   1896 Views


Community Member, 45 Posts

17 March 2009 at 7:43am

I have read the tutorial for creating a function to resize an image but i cannot seem to get it to work correctly. Here is my scenario: - this is the main Holder template that will contain the resized thumbnails - this is the detail page for each of the GalleryItems - the images that are resized on the Holder page are attached so the GalleryItemPage class

I have added the following code to the GalleryItemPage.php

class GalleryItemPage extends Page {
   static $db = array(
   static $has_one = array(
      'GalleryItemImage' => 'Image',
	  'GalleryItemThumb' => 'GalleryItemPage_Thumb150px'

on what page do i put the following function class?

class GalleryItemPage_Thumb150px extends Image {

   function generateThumb150px($gd) {
      return $gd->resizeRatio(150,150);

If I put in the GalleryItemPage.php file, it does not seem to be callable in the template - which is where i want the resized thumbnails to be generated.


Community Member, 45 Posts

17 March 2009 at 4:40pm

I found the issue. I did not pick up on the fact that I needed to update the ClassName for all the existing images I had already uploaded in File table. Once I updated all the thumb images with the class name of GalleryItemPage_Thumb150px, the resize code worked. This is key for making this change after you've already uploaded images under the Image classname.