I've got a bunch of dataobjects (lets call them Events) that each have a related category (EventCategory) and I'd like to return these to the template view so that I could show the events listed by category, something like:

Category 1 title
Event name
Event name

Category 2 title
Event name

Category 3 title
Event name
Event name

How would I go about doing this, so that I can have a dynamic amount of categories (a category will always have events too)?

I recently had the same question and the way that I got around it was to use the NestedDataObjectManager, this allowed each page to has_many categories then each category to has_many objects. This way you could add many categories to each page as needed then add the objects to those categories. In the template it was then as simple as:

<% control Categories %>
$CategoryTitle
<% control Events %>
$EventTitle - $Description
<% end_control %>
<% end_control %>

Thanks Howard, I worked it out just as you posted that one!

Cheers