_assign_attributes

# File activerecord/lib/active_record/attribute_assignment.rb, line 15
      def _assign_attributes(attributes)
        multi_parameter_attributes  = {}
        nested_parameter_attributes = {}

        attributes.each do |k, v|
          if k.include?("(")
            multi_parameter_attributes[k] = attributes.delete(k)
          elsif v.is_a?(Hash)
            nested_parameter_attributes[k] = attributes.delete(k)
          end
        end
        super(attributes)

        assign_nested_parameter_attributes(nested_parameter_attributes) unless nested_parameter_attributes.empty?
        assign_multiparameter_attributes(multi_parameter_attributes) unless multi_parameter_attributes.empty?
      end