I need a state machine for a message private system and order status system.

you can see these two gems:

https://github.com/pluginaweek/state_machine

https://github.com/rubyist/aasm

Edited..

I'm using mongoid with mongodb database

What gem is most appropriate for this features?

ruby-on-rails ruby-on-rails-3 ruby-on-rails-3.1 state-machine aasm
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