LTe/acts-as-messageable — pull request #58 by hoczaj (2014-01-02 10:46:26+00:00)
Title: Update message.rb

Just a little modification for Rails 4's error:
WARNING: Can't mass-assign protected attributes for ActsAsMessageable::Message: topic, body

And ofcourse this requires the protected attributes gem.

gem 'protected_attributes'