couchrest_model/lib/couchrest/model/dirty.rb
Will Leinweber d333133319 Adds suppport for ActiveModel::Dirty and ::AttributeMethods
* ActiveModel::Dirty
** Basic support for dirty tracking
** It does not bubble up any changes to casted models currently

* ActiveModel::AttributeMethods
** Attributes are now read and written through ActiveModel
** This also allows you to add your own attribute methods with
   prefix suffix and affix names. For more information check out
   ActiveModel::AttributeMethods::ClassMethods
2010-09-16 17:30:43 -05:00

45 lines
1 KiB
Ruby

# encoding: utf-8
require 'active_model/dirty'
module CouchRest #:nodoc:
module Model #:nodoc:
# Dirty Tracking support via ActiveModel
# mixin methods include:
# #changed?, #changed, #changes, #previous_changes
# #<attribute>_changed?, #<attribute>_change,
# #reset_<attribute>!, #<attribute>_will_change!,
# and #<attribute>_was
#
# Please see the specs or the documentation of
# ActiveModel::Dirty for more information
module Dirty
extend ActiveSupport::Concern
included do
include ActiveModel::Dirty
after_save :clear_changed_attributes
end
def initialize(*args)
super
@changed_attributes.clear if @changed_attributes
end
def write_attribute(name, value)
meth = :"#{name}_will_change!"
__send__ meth if respond_to? meth
super
end
private
def clear_changed_attributes
@previously_changed = changes
@changed_attributes.clear
true
end
end
end
end