This tutorial here is what you'll be needing: http://doc.silverstripe.com/doku.php?id=tutorial:2-extending-a-basic-site

It explains how to create image uploaders for pages within the CMS. More specifically, it's the 'Adding a staff section' portion of the tutorial you'll be most interested in.

If you're looking to get a random image instead of a fixed one per page, then you could add the images to a directory inside assets/banners or similar (in the same directory level as sapphire and cms), then create a function as you would normally in any PHP implementation to fetch this directory's contents using scandir or similar, then shuffle the array around.

The banners directory inside assets can be maintained by the CMS using the Files & Images section. The SilverStripe admin can upload the image files directly into the banner directory itself which gets added to the shuffle.

If you haven't already done so I'd recommend running through the tutorials to see how SilverStripe works.

Cheers,
Sean

Hello
I had same problem and my tip is, in Page_Controller

   public function RandomImage( $strLeftDirName )
   {
      if ( !is_string( $strLeftDirName ) )
      {
         return false;
      }
      $left_dir = DataObject::get_one("Folder", "Name = \"$strLeftDirName\"");
      $randImg = ( $left_dir->ID ) ? DataObject::get_one("Image", "ParentID = $left_dir->ID", true, "RAND()" ) : false;
      return $randImg->Filename;
   }

And in template $RandomImage(page_left) where page_left is directory name where I have proper images.
Works fine and is very flexible

can you tell me, to implement random Image in sidebar from gallery,
the function in mysite\code\Page.php and the call in the
\templates\Includes\SideBar.SS.

can you help me thanks!

Stooni----

Stooni,

Make sure to thoroughly go through the tutorials. The SS templating system does not work PHP code. You'd have to create a function in your page which returns the list of random images (or single image) ... Then you can call it by implementing a <% control %> in your template.