Hello

This what I'm trying to do :

I have extended ImageGalleryPage to add more details to it like this

in code/MyImageGalleryItem.php

<?php
class MyImageGalleryItem extends ImageGalleryItem
{
static $db = array (
'Title' => 'Varchar(100)',
'Day' => 'Varchar(50)',
'Edition' => 'Varchar(50)',
'Technique' => 'Varchar(50)' ,
'Dimensions' => 'Varchar(100)',
'Original' => 'Varchar(50)' ,
'TechniqueOriginal' => 'Varchar(50)' ,
'DimensionsOriginal' => 'Varchar(100)',
'Sold' => 'Boolean'
// etc...
);

public function getCMSFields_forPopup()
{
$f = parent::getCMSFields_forPopup();
$f->push(new TextField('Title','Tiltle'));
$f->push(new TextField('Day','Day'));
$f->push(new TextField('Edition','Edition'));
$f->push(new TextField('Technique','Technique'));
$f->push(new TextField('Dimensions','Dimensions'));
$f->push(new TextField('Original','Original'));
$f->push(new TextField('TechniqueOriginal','TechniqueOriginal'));
$f->push(new TextField('DimensionsOriginal','DimensionsOriginal'));
$f->push(new CheckboxField('Sold','This painting is sold'));
return $f;
}
}

in code/MyImageGalleryPage.php

<?php
class MyImageGalleryPage extends ImageGalleryPage {
protected $itemClass = "MyImageGalleryItem";
}

class MyImageGalleryPage_Controller extends ImageGalleryPage_Controller  {

}
?>

Now I'm trying to display some of the information for example Dimensions or Edition in an other page

I then created another page code/DimensionPage.php with this

<?php
/**
 * Defines the WordPage page type
 */
class DimensionPage extends Page {
    static $db = array(
    );
    static $has_one = array(
    );
}
 
class DimensionPage_Controller extends Page_Controller {
    
	function getWords() {
$words = DataObject::get("MyImageGalleryItem","$Dimension");
  } 
}
  
?>

but of course it is not working because I don't really understand how DataObject::get works works even tough I've been reading docs
I'm pretty new to all this so if someone can take a bit of time to explain or point a relevant post it would be great

Thanks