I don't know if anyone has tried to add pagination to the products pages, but I successfully added it. If anyone wants to do this as well, my contact information is in my profile.

If there is a big response to this, I will post a guide to do it, in here.

Would you mind if you post a link for your site ?

Stevie Wonders how you did it :)

First, add this code to "/ecommerce/code/ProductGroup.php"

class ProductGroup_Controller extends Page_Controller {

...
	
function ProductList() {
  if(!isset($_GET['start']) || !is_numeric($_GET['start']) || (int)$_GET['start'] < 1) $_GET['start'] = 0;
  $SQL_start = (int)$_GET['start'];
  $doSet = DataObject::get(
    $callerClass = "Product",
    $filter = "`ParentID` = '".$this->ID."'",
    $sort = "",
    $join = "",
    $limit = "{$SQL_start},8"
  );
 
  return $doSet ? $doSet : false;
}

In the above statement, the "8" in the $limit variable is how many results you would like per page.

Then add this to "/themes/*_ecommerce/templates/Layout/ProductGroup.ss"

<div id="pages">
  <% if ProductList.MoreThanOnePage %>
  <p>
    <% if ProductList.PrevLink %>
    	<a href="$ProductList.PrevLink">&laquo; Previous</a> |
    <% end_if %>

    	Page:
    <% control ProductList.Pages %>
        <% if CurrentBool %>
            $PageNum
        <% else %>
            <a href="$Link" title="Go to page $PageNum">$PageNum</a>
        <% end_if %>
    <% end_control %>

    <% if ProductList.NextLink %>
    	| <a href="$ProductList.NextLink">Next &raquo;</a>
    <% end_if %>
  </p>
  <% end_if %>
</div>

*edit*

I cant post a link to the site, because it was done via freelance, and is still under development.

Going along with your example, is there then a way to have next/previous links within the Product pages that allows you to click between them once you made an initial choice on the ProductGroup page?

I'd like to translate this to my portfolio page. I have a ProjectsHolder page that displays thumbnails that each link to different Projects. I'd like to have a feature on each Project page that displays 'previous/next' links to navigate between Projects (instead of the user having to go back to the original ProjectHolder to access other Projects).

I think a pagination with JQuery....