cloudsolutions-atoms/lib/models/part.dart

class Part {
  int id;
  int reportPartID;
  String partNo;
  String partName;
  int quantity;
  double returnQty, installQty;

  Part({
    this.id,
    this.reportPartID,
    this.partNo,
    this.partName,
    this.quantity = 1,
    this.installQty,
    this.returnQty,
  });

  Map<String, dynamic> toJson() {
    return {
      "id": reportPartID ?? 0,
      "sparePart": {"id": id, "partNo": partNo, "partName": partName},
      "qty": quantity,
      if (returnQty != null) "returnQty": returnQty,
      if (installQty != null) "installQty": installQty,
    };
  }

  factory Part.fromJson(Map<String, dynamic> parsedJson, {Map<String, dynamic> reportJson}) {
    return Part(
      id: parsedJson["id"],
      reportPartID: reportJson != null ? reportJson["id"] : null,
      partNo: parsedJson["partNo"],
      partName: parsedJson["partName"],
      quantity: reportJson != null ? (reportJson["qty"] ?? 1).toInt() : 1,
      returnQty: parsedJson["returnQty"],
      installQty: parsedJson["installQty"],
    );
  }
}