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Ferdi/gist:3707112

Forked from simplyb/previously_dirty.rb
Created September 12, 2012 14:45
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gistfile1.rb
module PreviouslyDirty
extend ActiveSupport::Concern
included do
attribute_method_suffix '_previously_changed?'
end
private
# Handle <tt>*_previously_changed?</tt> for +method_missing+.
def attribute_previously_changed?(attr)
previous_changes.include?(attr)
end
end
class ActiveRecord::Base
self.send(:include, PreviouslyDirty)
end
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