OK, bit of an odd problem. I'm trying to create a Zope product that will display a series of items. The items have a title, URL and description displayed. They will also be sorted by categories - two main categories (mine, others) and many subcategories. An item can only have one main category and one subcategory. When displayed the items will be sorted main category->sub category->title, in alphabetic order, but I might want to sort in other ways. So, to get to the point, I was wondering what the Zope method of actually doing this would be. In PHP I'd create a table referencing the main/subcategories and just use an ORDER BY. In Zope I was thinking of using two classes - a container (subclass ObjectManager) and an item class. The item would have all the properties and I'd sort through those, possibly using a ZCatalog or something to index. I was wondering if that was the 'correct' approach, and if so what could I do to optimise searching? Secondly, a related problem. I want one user to have read/write access to the product, and others to have a read-only access, and anonymous to have no access. I assume that to give the access levels I'd create roles using SecurityManager calls in the Product class, and for the read/write role I'd use a local role. I would also guess that I'd assign local roles for each person with read/write access, as it would need to be set on a per-instance basis. I'm still making the PHP->Zope transition. Let me know if I'm completely up the wrong tree ;) -- Phillip Hutchings http://www.sitharus.com/ sitharus@gmail.com / sitharus@sitharus.com