module CouchRest module Mixins module Attributes ## Support for handling attributes # # This would be better in the properties file, but due to scoping issues # this is not yet possible. # def prepare_all_attributes(doc = {}, options = {}) apply_all_property_defaults if options[:directly_set_attributes] directly_set_read_only_attributes(doc) else remove_protected_attributes(doc) end directly_set_attributes(doc) unless doc.nil? end # Takes a hash as argument, and applies the values by using writer methods # for each key. It doesn't save the document at the end. Raises a NoMethodError if the corresponding methods are # missing. In case of error, no attributes are changed. def update_attributes_without_saving(hash) # Remove any protected and update all the rest. Any attributes # which do not have a property will simply be ignored. attrs = remove_protected_attributes(hash) directly_set_attributes(attrs) end alias :attributes= :update_attributes_without_saving # Takes a hash as argument, and applies the values by using writer methods # for each key. Raises a NoMethodError if the corresponding methods are # missing. In case of error, no attributes are changed. def update_attributes(hash) update_attributes_without_saving hash save end private def directly_set_attributes(hash) hash.each do |attribute_name, attribute_value| if self.respond_to?("#{attribute_name}=") self.send("#{attribute_name}=", hash.delete(attribute_name)) end end end def directly_set_read_only_attributes(hash) property_list = self.properties.map{|p| p.name} hash.each do |attribute_name, attribute_value| next if self.respond_to?("#{attribute_name}=") if property_list.include?(attribute_name) write_attribute(attribute_name, hash.delete(attribute_name)) end end end def set_attributes(hash) attrs = remove_protected_attributes(hash) directly_set_attributes(attrs) end def check_properties_exist(attrs) property_list = self.properties.map{|p| p.name} attrs.each do |attribute_name, attribute_value| raise NoMethodError, "Property #{attribute_name} not created" unless respond_to?("#{attribute_name}=") or property_list.include?(attribute_name) end end end end end