Contents

module CouchTomato
  module Persistence
    module DirtyAttributes
      
      def self.included(base)
        base.class_eval do
          after_save :reset_dirty_attributes
        end
      end
      
      # returns true if a model has dirty attributes, i.e. their value has changed since the last save
      def dirty? 
        new? || self.class.properties.inject(false) do |res, property|
          res || property.dirty?(self)
        end
      end
      
      private
      
      def reset_dirty_attributes
        self.class.properties.each do |property|
          instance_variable_set("@#{property.name}_was", send(property.name))
        end
      end
    end
  end
end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
couch_tomato-0.2.0	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.5	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.4	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.3	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.2	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.1	lib/couch_tomato/persistence/dirty_attributes.rb
couch_tomato-0.1.0	lib/couch_tomato/persistence/dirty_attributes.rb