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DataObjectManager Module /

Discuss the DataObjectManager module, and the related ImageGallery module.

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

Get size of generated image after SetRatioSize

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4 Posts   1975 Views


Community Member, 13 Posts

4 March 2011 at 2:54am

Hi All,

I have a very simple gallery page set up using a DataObject.... it allows me to upload multiple images to a single page on my site.

Here are the relevant files :


class galleryImages extends DataObject {

 static $db = array(
     'Title' => 'Text'
 static $has_one = array(
     'Image' => 'Image',
     'GalleryPage' => 'GalleryPage'

 public function getCMSFields_forPopup() {
  return new FieldSet(
          new TextField('Title'),
          new FileIFrameField('Image')



class GalleryPage extends Page {

 static $has_many = array(
     'Images' => 'galleryImages'
 public static $db = array(
 public static $has_one = array(

 public function getCMSFields() {
  $f = parent::getCMSFields();
  $manager = new ImageDataObjectManager(
                      'Title' => 'Title'

  $f->addFieldToTab("Root.Content.Gallery", $manager);

  return $f;


class GalleryPage_Controller extends Page_Controller {


and a snippet from /themes/..../

  <div id="gallerySlider">
  <% control Images %>
   <a class="gallerythumb" href="$Image.URL" title="$Caption">$Image.SetRatioSize(120,110)</a>
  <% end_control %>

Now... all of the above is working well... I can upload and re-order the images in the CMS, etc. and they get displayed properly in the template. The real question... is there any way to get the *actual* width of the thumbnail images which are being created using SetRatioSize() ? The reason being that I need to put some inline styling into the page (i.e. <img style="width: blah;" src="" />)

Any ideas ?

Cheers all



Community Member, 4 Posts

20 August 2011 at 8:51am

I am having the same issue. Did you ever get a solution for this?


Forum Moderator, 4102 Posts

20 August 2011 at 2:43pm

Just change the scope to the resize function, and you'll get the new dimensions.

<% control Images %>
<a class="gallerythumb" title="$Caption" href="$image.URL">
<% control Image %>
<% control SetRatioSize(210,110) %>
<img src="URL" width="$Width" height="$Height" />
<% end_control %>
<% end_control %>

<% end_control %>

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Community Member, 107 Posts

20 August 2011 at 3:53pm

woow.. ty so much.... i am collection all snipets from around SilverStripe & soon making a blog, it will explain these small thing in more details & makes it easier to find.. Cheese man .. o i mean Cheers man :)