execute_callstack_for_multiparameter_attributes

# File activerecord/lib/active_record/attribute_assignment.rb, line 44
      def execute_callstack_for_multiparameter_attributes(callstack)
        errors = []
        callstack.each do |name, values_with_empty_parameters|
          if values_with_empty_parameters.each_value.all?(NilClass)
            values = nil
          else
            values = values_with_empty_parameters
          end
          send("#{name}=", values)
        rescue => ex
          errors << AttributeAssignmentError.new("error on assignment #{values_with_empty_parameters.values.inspect} to #{name} (#{ex.message})", ex, name)
        end
        unless errors.empty?
          error_descriptions = errors.map(&:message).join(",")
          raise MultiparameterAssignmentErrors.new(errors), "#{errors.size} error(s) on assignment of multiparameter attributes [#{error_descriptions}]"
        end
      end