public async Task <OrderDetailModel> AddDetailToOrder(int id, OrderDetailModel model)
{
if (await OrderExists(id) == false)
{
throw new EntityNotFoundException <OrderModel>(id);
}
var detail = new OrderDetail();
model.MapTo(detail);
detail.OrderId = id;
await _db.OrderDetails.AddAsync(detail);
await _db.SaveChangesAsync();
return(detail.MapToDto());
}
