counters/lib/value.dart

class Value {
  final int? id;
  final int counterId;
  final DateTime date;
  final int rate1Id;
  final double value1;
  final int? rate2Id;
  final double? value2;
  final int? rate3Id;
  final double? value3;

  Value(
      {this.id,
      required this.counterId,
      required this.date,
      required this.rate1Id,
      required this.value1,
      this.rate2Id,
      this.value2,
      this.rate3Id,
      this.value3});

  factory Value.fromMap(Map<String, dynamic> json) => Value(
      id: json["id"],
      counterId: json["counter_id"],
      date: DateTime.fromMicrosecondsSinceEpoch(json["date"], isUtc: true),
      rate1Id: json["rate1_id"],
      value1: json["value1"],
      rate2Id: json["rate2_id"],
      value2: json["value2"],
      rate3Id: json["rate3_id"],
      value3: json["value3"]);

  Map<String, dynamic> toMap() => {
        "id": id,
        "counter_id": counterId,
        "date": date.microsecondsSinceEpoch,
        "rate1_id": rate1Id,
        "value1": value1,
        "rate2_id": rate2Id,
        "value2": value2,
        "rate3_id": rate3Id,
        "value3": value3
      };
}