changing foreign key values

Hi all,

I have a simple inventory application that consists of rooms with many
items (computers, printers, etc). I'd like to create a form for
moving an existing item to another room. This means changing the
value of the room_id foreign key in the particular row of the item

If I wasn't using Rails, I'd probably do something like assemble a
hash of key = room name pairs with some SQL, and make a form with a
drop-down that allows you to choose another room name and executes
another sql statment that updates the item record with the new foreign
key. Does that same strategy still apply, or is there a more "Rail-
esque" way of doing that?

Just wondering...