In my application i have the following models:
Item - has_and_belongs_to_many :orders Order - has_and_belongs_to_many :items
This is a basic setup for a small shopping app, I can successfully add/remove/edit a list of items to one or more orders, but now from the administration i need to be able to perform a search like: "show orders having (at least) item x and item y and item z (or more)"
Basically, i need to use AND conditions for items belonging to orders, something like Order.find(:all, :conditions => "items.id = 2 AND items.id = 5 AND ...", :include => [:items]) . Obviously the query above doesn't work, but I can't figure out how to do that.
Thanks in advance