couchrest_model/lib/couchrest/model/dirty.rb

49 lines
1.3 KiB
Ruby

# encoding: utf-8
I18n.load_path << File.join(
File.dirname(__FILE__), "validations", "locale", "en.yml"
)
module CouchRest
module Model
# This applies to both Model::Base and Model::CastedModel
module Dirty
extend ActiveSupport::Concern
include CouchRest::Model::CastedBy # needed for base_doc
include ActiveModel::Dirty
included do
# internal dirty setting - overrides global setting.
# this is used to temporarily disable dirty tracking when setting
# attributes directly, for performance reasons.
self.send(:attr_accessor, :disable_dirty)
end
def use_dirty?
bdoc = base_doc
bdoc && !bdoc.disable_dirty
end
def couchrest_attribute_will_change!(attr)
return if attr.nil? || !use_dirty?
attribute_will_change!(attr)
couchrest_parent_will_change!
end
def couchrest_parent_will_change!
@casted_by.couchrest_attribute_will_change!(casted_by_attribute) if @casted_by
end
private
# return the attribute name this object is referenced by in the parent
def casted_by_attribute
return @casted_by_attribute if @casted_by_attribute
attr = @casted_by.attributes
@casted_by_attribute = attr.keys.detect { |k| attr[k] == self }
end
end
end
end