Notice about Mongoid 2.x
It's important to realize that quite a bit has changed between the two major releases of Mongoid. It's an uncanny coincidence that just like Rails, major versions (2.x and 3.x) differ from each other vastly. Let's take a look at some of the differences between Mongoid 2.x and Mongoid 3.x.
Mongoid 3.x and later versions support Ruby 1.9.3 and onwards only.
There are entirely new options in
mongoid.ymlfor database configuration.Mongoid has changed its serialization mechanism.
Apart from these, there are quite a few more changes, which have made using Mongoid better and faster.
