Hi everyone

I have a hierarchy of "template" DataObjects (a Package has Modules, a Module has Features). When I use the CMS to edit a Product (which has a many-to-many relationship with Package) and link a Package to the Product, I want the CMS to merge any missing Modules and Features of the Package into the Product (the non-template objects have their own classes that relate back to Product).

Is there a "right" way of going about this? I've been trying to intercept the call to ManyManyList::add when adding a Package to a Product so I can do the extra processing at that point but this approach doesn't feel right. I also don't know how I'd go about getting the client-side updated with the unexpected server-side changes I'd be making.

Has anyone else got this sort of scheme working?

Thanks In advance
Simon