module CouchPotato module Persistence module Json def self.included(base) #:nodoc: base.extend ClassMethods end # returns a JSON representation of a model in order to store it in CouchDB def to_json(*args) to_hash.to_json(*args) end # returns all the attributes, the ruby class and the _id and _rev of a model as a Hash def to_hash (self.class.properties).inject({}) do |props, property| property.serialize(props, self) props end.merge(JSON.create_id => self.class.name).merge(id_and_rev_json) end private def id_and_rev_json ['_id', '_rev', '_deleted'].inject({}) do |hash, key| hash[key] = self.send(key) unless self.send(key).nil? hash end end module ClassMethods # creates a model instance from JSON def json_create(json) return if json.nil? instance = self.new instance._id = json[:_id] || json['_id'] instance._rev = json[:_rev] || json['_rev'] instance.instance_variable_set('@skip_dirty_tracking', true) properties.each do |property| property.build(instance, json) end instance.instance_variable_set('@skip_dirty_tracking', false) # instance.instance_variable_get("@changed_attributes").clear if instance.instance_variable_get("@changed_attributes") instance end end end end end