Hello,
On my home page I want to disply a large single testimonial image that randomly changes every time a visitor comes to the site.
Any suggestions on how to set that up. I can get as far as setting up testimonial data objects to create a gallery, I just don't know how to the display-a-singular-image randomly part.

Thanks in advance,
Sam

It's a little cleaner if you just return a single image. That way you don't need a control.

$ThumbURL = DataObject::get_one('YourDataObject', '',true,'Rand()');

<div>$MainShow</div>

Hmmm, depending on the scale of your site, sorting by RAND() is really bad. It's slow and really could cause problems if you have a lot of objects in the DB.

This is some code i use to get one random object:

Hi Folks,
So I can't get any of the previously suggested solutions to work.
Solution #1 (PatJnr) , I get no image, no code in template.

Solution #2 (Uncle Cheese) gives me the following error: Uncaught Exception: Object->__call(): the method 'fortemplate' does not exist on 'Testimonial'

Solution #3(Pigeon) I get a random number link (e.g., "#1") displaying with the following extra code inserted in the template:
<ul id="Menu1"><li onclick="location.href = this.getElementsByTagName('a')[0].href"><a href="">#1</a></li></ul>

Here is my code:
mysite/code/Testimonial.php

<?php
class Testimonial extends DataObject
{
static $db = array (
'Caption' => 'Varchar(50)'
);

static $has_one = array (
'TestimonialPage' => 'TestimonialPage',
'TestimonialImage' => 'Image'
);

public function getDOMThumbnail()
{
return $this->TestimonialImage()->CroppedImage(50,50);
}

function getCMSFields()
{
return new FieldSet(
new ImageField('TestimonialImage'),
new TextField('Caption','Caption')
);
}
}
?>
********************
mysite/code/TestimonialPage.php

<?php
class TestimonialPage extends Page {

   static $has_many = array (
    'Testimonials' => 'Testimonial'
);

   function getCMSFields() {
      $fields = parent::getCMSFields();
      $manager = new ImageDataObjectManager(
      $this,
          'Testimonials',// Source name
          'Testimonial',// Source class
          'TestimonialImage',// File name on DataObject
          array('Caption' => 'Caption'),
          'getCMSFields'
      );

      $manager->setAllowedFileTypes(array('jpg'));
      $manager->setBrowseButtonText("Upload (JPG only)");
      $fields->addFieldToTab("Root.Content.Testimonials",$manager);
   return $fields;
}
   
} /* end SiteTree */

class TestimonialPage_Controller extends Page_Controller {
   
/* example 2 */
   function RandomTestimonial (){
    $ImageURL = DataObject::get_one('Testimonial', '',true,'Rand()');
    return $ImageURL; }
   }
   
/* example 3 */
   function getRandomObject() {
      if ($do = DataObject::get('Testimonial')) {
      return $do->getRange(rand(0,$do->Count() - 1),1);
}
}

} /* end Controller */
?>

************************
templates/layout/Testimonial.ss (example 2)
<div id="Mainbody">$RandomTestimonial</div>

templates/layout/Testimonial.ss (example 3)
<div id="Mainbody">$getRandomObject</div>

I wasn't sure if I was to give the object source name or class in the DataObject::get('Testimonial')) part. I tried doing both with no luck.

Anymore help would be greatly appreciated.
Thanks,
Sam