troubles with names

ProjectPublishing/ProjectPublishing/Entities/Order.cs

@@ -63,5 +63,15 @@ namespace ProjectPublishing.Entities
                 OrderDate = DateTime.Now, 
                 Description = tempOrderMaterials.Description ?? string.Empty };
         }
+
+        public void SetOrderMaterials(IEnumerable<OrderMaterials> orderMaterials)
+        {
+            if (orderMaterials != null && orderMaterials.Any())
+            {
+                Materials = orderMaterials;
+            }
+        }
+
+        
     }
 }

ProjectPublishing/ProjectPublishing/Repositories/Implementations/OrderRepository.cs

@@ -10,6 +10,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
 
 namespace ProjectPublishing.Repositories.Implementations
 {
@@ -89,8 +90,8 @@ WHERE Id=@id";
                 using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
                 var querySelect = @"
 SELECT o.*,
-ma.MaterialId as MaterialsId, 
 ma.Amount as MaterialsAmount,
+ma.MaterialId as MaterialsId, 
 CONCAT(c.LastName, ' ', c.FirstName) as CustomerName,
 ph.Name as PrintingName
 FROM PrintingOrder o
@@ -98,11 +99,28 @@ LEFT JOIN OrderMaterials ma ON o.Id = ma.OrderId
 LEFT JOIN Customer c ON o.CustomerId = c.Id
 LEFT JOIN PrintingHouse ph ON o.PrintingId = ph.Id
 "; // возможно сюда фикс
-                var printingOrders = connection.Query<TempOrderMaterials>(querySelect);
-                _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(printingOrders));
+                //var printingOrders = connection.Query<TempOrderMaterials>(querySelect);
+                var ordersDict = new Dictionary<int, List<OrderMaterials>>();
+                var orders = connection.Query<Order, OrderMaterials, Order>(querySelect,
+                (order, orderMaterials) =>
+                {
+                    if (!ordersDict.TryGetValue(order.Id, out var frr))
+                    {
+                        frr = [];
+                        ordersDict.Add(order.Id,frr);
+                    }
 
-                return printingOrders.GroupBy(x => x.Id, y => y, (key, value) =>
-                Order.CreateOrder(value.First(), value.Select(z => OrderMaterials.Create(0, z.MaterialsId, z.MaterialsAmount)))).ToList();
+                    frr.Add(orderMaterials);
+                    return order;
+                }, splitOn: "MaterialsId");
+                _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(orders));
+
+                return ordersDict.Select(x =>
+                {
+                    var o = orders.First(y => y.Id == x.Key);
+                    o.SetOrderMaterials(x.Value);
+                    return o;
+                }).ToArray();
             }
             catch (Exception ex)
             {