class ActiveModel::Type::Helpers::AcceptsMultiparameterTime

def initialize(defaults: {})
  define_method(:cast) do |value|
    if value.is_a?(Hash)
      value_from_multiparameter_assignment(value)
    else
      super(value)
    end
  end
  define_method(:assert_valid_value) do |value|
    if value.is_a?(Hash)
      value_from_multiparameter_assignment(value)
    else
      super(value)
    end
  end
  define_method(:value_from_multiparameter_assignment) do |values_hash|
    defaults.each do |k, v|
      values_hash[k] ||= v
    end
    return unless values_hash[1] && values_hash[2] && values_hash[3]
    values = values_hash.sort.map(&:last)
    ::Time.send(default_timezone, *values)
  end
  private :value_from_multiparameter_assignment
end