iv_and/product.dart

class Product {
  final int? id;
  final String name;
  final double unitPrice;
  final double discount;

  Product({
    this.id,
    required this.name,
    required this.unitPrice,
    required this.discount,
  });

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'name': name,
      'unit_price': unitPrice,
      'discount': discount,
    };
  }

  factory Product.fromMap(Map<String, dynamic> map) {
    return Product(
      id: map['id'] as int?,
      name: map['name'] as String,
      unitPrice: map['unit_price'] as double,
      discount: map['discount'] as double,
    );
  }
}