class Product { final int id; final String name; final double calories; final double protein; final double carb; final double fat; final double fiber; Product({ required this.id, required this.name, required this.calories, required this.protein, required this.carb, required this.fat, required this.fiber, }); Product.fromJson(Map map): id = map['id'] as int, name = map['name'] as String, calories = map['calories'] as double, protein = map['protein'] as double, carb = map['carb'] as double, fat = map['fat'] as double, fiber = map['fiber'] as double; }