[Deprecated] DMZ 1.6.2 (DataMapper OverZealous Edition)

[eluser]OverZealous[/eluser]
You can see examples of how to save relationships by looking at the source to the Array extension.

It isn't really that complicated, however. You just query all of the currently related items, then loop through twice. Finally, save the new items.

Loop once to remove any items that are not in the new list.
Loop again to determine what IDs are new.

Then, look up each new item, and save it in an array back to the parent object.

Don't forget you can save a lot of time by calling select('id') before getting any relationship, since you only care about relating the items (not writing them out).