mongoid/mongoid — pull request #1910 by Empact (2012-04-12 23:42:46+00:00)
Title: Use for_ids within multiple_from_map_or_db

So, mongoid-slug currently works by overloading #for_ids, so #1906 broke it because the find for those not_in_map doesn't get the slug treatment.

Is it appropriate to use for_ids here, or should mongoid-slug be overloading something else? I see #for_ids recently became a private api.