mongoid/mongoid-site — pull request #104 by masukomi (2012-01-06 13:25:29+00:00)
Title: Added examples and explanation on querying for subclasses

Explained how to search for objects of a particular subclass
within an embedded collection.

Added a little more info about the _type attribute.

Please note, I haven't been able to preview this owing to issue #103 but it *should* be ok (famous last words).