make possible to load services list

PIbd-23_Gutorov_I.A._IT-Company/Entities/Contract.cs

@@ -36,4 +36,19 @@ public class Contract
             Services = services
         };
     }
+
+    public static Contract CreateEntity(TempServiceContract tempServiceContract, IEnumerable<Service> services)
+    {
+        return new Contract
+        {
+            Id = tempServiceContract.Id,
+            CustomerID = tempServiceContract.CustomerID,
+            ExecutorID = tempServiceContract.ExecutorID,
+            Category = tempServiceContract.Category,
+            ConclusionDate = tempServiceContract.ConclusionDate,
+            Deadline = tempServiceContract.Deadline,
+            PaymentAmount = tempServiceContract.PaymentAmount,
+            Services = services
+        };
+    }
 }

PIbd-23_Gutorov_I.A._IT-Company/Entities/TempServiceContract.cs

@@ -0,0 +1,24 @@
+using PIbd_23_Gutorov_I.A._IT_Company.Entities.Enums;
+
+namespace PIbd_23_Gutorov_I.A._IT_Company.Entities;
+
+public class TempServiceContract
+{
+    public int Id { get; private set; }
+
+    public int CustomerID { get; private set; }
+
+    public int ExecutorID { get; private set; }
+
+    public ContractCategory Category { get; private set; }
+
+    public DateTime ConclusionDate { get; private set; }
+
+    public DateTime Deadline { get; private set; }
+
+    public int PaymentAmount { get; private set; }
+
+    public int ServiceId { get; private set; }
+
+    public string Description { get; private set; } = string.Empty;
+}

PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContract.cs

@@ -75,9 +75,12 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
 
             foreach (DataGridViewRow row in dataGridViewServices.Rows)
                 if (row.Cells["ColumnServiceDescription"].Value != null)
-                    list.Add(Service.CreateEntity(0, Convert.ToString(row.Cells["ColumnServiceDescription"].Value)!));
+                    list.Add(Service.CreateEntity(Convert.ToInt32(row.Cells["ColumnServiceDescription"].Value),
+                        Convert.ToString(row.Cells["ColumnServiceDescription"])!));
 
-            return list;
+            return list.GroupBy(x => x.Id)
+                .Select(x => x.First())
+                .ToList();
         }
     }
 }

PIbd-23_Gutorov_I.A._IT-Company/Repositories/Implementations/ContractRepository.cs

@@ -2,6 +2,7 @@
 using Microsoft.Extensions.Logging;
 using Newtonsoft.Json;
 using Npgsql;
+using PIbd_23_Gutorov_I.A._IT_Company.Entities;
 
 namespace PIbd_23_Gutorov_I.A._IT_Company.Repositories.Implementations;
 
@@ -76,17 +77,25 @@ public class ContractRepository : IContractRepository
         }
     }
 
-    public IEnumerable<Entities.Contract> ReadContracts(DateTime? dateFrom = null, DateTime? dateTo = null, int? customerId = null, int? executorId = null)
+    public IEnumerable<Contract> ReadContracts(DateTime? dateFrom = null, DateTime? dateTo = null, int? customerId = null, int? executorId = null)
     {
         _logger.LogInformation("Получение всех объектов");
 
         try
         {
             using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
-            var querySelect = @"SELECT * FROM Contracts";
+            var querySelect = @"
-            var contracts = connection.Query<Entities.Contract>(querySelect);
+                SELECT c.*, sc.ServiceId, s.Description
+                FROM Contracts c
+                INNER JOIN ServiceContract sc ON sc.ContractId = c.Id
+                INNER JOIN Services s ON sc.ServiceId = s.Id
+            ";
+            var contracts = connection.Query<TempServiceContract>(querySelect);
             _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(contracts));
-            return contracts;
+            return contracts
+                .GroupBy(x => x.Id, y => y, (key, value) =>
+                Contract.CreateEntity(value.First(), value.Select(z => Service.CreateEntity(z.ServiceId, z.Description))))
+                .ToList();
         }
         catch (Exception ex)
         {