How to override attr_accessible and allow mass-assignment

[RTFM](http://api.rubyonrails.org/classes/ActiveRecord/Base.html#method-c-new) ```ruby # Via roles User.new({ :first_name => 'Jamie', :is_admin => true }, :as => :admin) # Via without_protection User.new({ :first_name => 'Jamie', :is_admin => true }, :without_protection => true) ```