diff --git a/Course/BusinessLogic/BusinessLogic/DetailLogic.cs b/Course/BusinessLogic/BusinessLogic/DetailLogic.cs
index 43f11f0..dd24474 100644
--- a/Course/BusinessLogic/BusinessLogic/DetailLogic.cs
+++ b/Course/BusinessLogic/BusinessLogic/DetailLogic.cs
@@ -65,6 +65,10 @@ namespace BusinessLogic.BusinessLogic
             {
                 throw new ArgumentNullException("Цена детали должна быть больше 0", nameof(model.Cost));
             }
+            if (model.DateCreate > DateTime.Now)
+            {
+                throw new ArgumentNullException("Деталь не может быть создана в будущем", nameof(model.DateCreate));
+            }
             _logger.LogInformation("Detail. DetailName:{Name}. Cost:{Cost}. Id:{Id}", model.Name, model.Cost, model.Id);
             var elem = _detailStorage.GetElement(new DetailSearchModel
             {
diff --git a/Course/Contracts/BindingModels/DetailBindingModel.cs b/Course/Contracts/BindingModels/DetailBindingModel.cs
index 2bd13f7..70195c8 100644
--- a/Course/Contracts/BindingModels/DetailBindingModel.cs
+++ b/Course/Contracts/BindingModels/DetailBindingModel.cs
@@ -8,5 +8,6 @@ namespace Contracts.BindingModels
         public int UserId { get; set; }
         public string Name { get; set; } = string.Empty;
         public double Cost { get; set; }
+        public DateTime DateCreate { get; set; }
     }
 }
diff --git a/Course/Contracts/SearchModels/DetailSearchModel.cs b/Course/Contracts/SearchModels/DetailSearchModel.cs
index 47ff68a..b360719 100644
--- a/Course/Contracts/SearchModels/DetailSearchModel.cs
+++ b/Course/Contracts/SearchModels/DetailSearchModel.cs
@@ -11,5 +11,8 @@ namespace Contracts.SearchModels
 		public int? Id { get; set; }
 		public string? Name { get; set; }
 		public int? UserId { get; set; }
+		public DateTime? DateFrom { get; set; }
+
+		public DateTime? DateTo { get; set; }
 	}
 }
diff --git a/Course/Contracts/ViewModels/DetailViewModel.cs b/Course/Contracts/ViewModels/DetailViewModel.cs
index 1b5810f..955a9c7 100644
--- a/Course/Contracts/ViewModels/DetailViewModel.cs
+++ b/Course/Contracts/ViewModels/DetailViewModel.cs
@@ -16,6 +16,8 @@ namespace Contracts.ViewModels
 		[DisplayName("Цена детали")]
 		public double Cost { get; set; }
 		public int UserId { get; set; }
+		[DisplayName("Дата создания")]
+		public DateTime DateCreate { get; set; }
 
 	}
 }
diff --git a/Course/DataModels/Models/IDetailModel.cs b/Course/DataModels/Models/IDetailModel.cs
index afe00d2..e41429e 100644
--- a/Course/DataModels/Models/IDetailModel.cs
+++ b/Course/DataModels/Models/IDetailModel.cs
@@ -4,5 +4,6 @@
     {
         string Name { get; }
         double Cost { get; }
+        DateTime DateCreate { get; }
     }
 }
diff --git a/Course/DatabaseImplement/Implements/DetailStorage.cs b/Course/DatabaseImplement/Implements/DetailStorage.cs
index b93ec5b..2260591 100644
--- a/Course/DatabaseImplement/Implements/DetailStorage.cs
+++ b/Course/DatabaseImplement/Implements/DetailStorage.cs
@@ -27,12 +27,15 @@ namespace DatabaseImplement.Implements
 
 		public List<DetailViewModel> GetFilteredList(DetailSearchModel model)
 		{
-			if (!model.UserId.HasValue)
+			if (!model.UserId.HasValue && !model.DateFrom.HasValue && !model.DateTo.HasValue)
 			{
 				return new();
 			}
 			using var context = new FactoryGoWorkDatabase();
-			return context.Details.Where(x => x.UserId == model.Id).Select(x => x.GetViewModel).ToList();
+			if (model.DateFrom.HasValue)
+				return context.Details.Where(x => x.UserId == model.Id).Where(x => x.DateCreate < model.DateTo && x.DateCreate > model.DateFrom).Select(x => x.GetViewModel).ToList();
+			else
+				return context.Details.Where(x => x.UserId == model.Id).Select(x => x.GetViewModel).ToList();
 
 		}
 
diff --git a/Course/DatabaseImplement/Migrations/20240430182642_time.Designer.cs b/Course/DatabaseImplement/Migrations/20240430182642_time.Designer.cs
new file mode 100644
index 0000000..0adcaa4
--- /dev/null
+++ b/Course/DatabaseImplement/Migrations/20240430182642_time.Designer.cs
@@ -0,0 +1,564 @@
+// <auto-generated />
+using System;
+using DatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace DatabaseImplement.Migrations
+{
+    [DbContext(typeof(FactoryGoWorkDatabase))]
+    [Migration("20240430182642_time")]
+    partial class time
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "6.0.29")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
+
+            modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Details");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.DetailProduct", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("DetailId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DetailId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("DetailProducts");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.DetailProduction", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("DetailId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ProductionId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DetailId");
+
+                    b.HasIndex("ProductionId");
+
+                    b.ToTable("DetailProductions");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Guarantor", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Guarantors");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Implementer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Implementers");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Machine", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("Country")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Machines");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.Property<int?>("MachineId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("MachineId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Production", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Productions");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Worker", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<DateTime>("Birthday")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<double>("Salary")
+                        .HasColumnType("float");
+
+                    b.Property<string>("Specialization")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Workers");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.WorkerMachine", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("MachineId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("WorkerId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.ToTable("WorkerMachines");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.WorkerWorkshop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("WorkerId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("WorkshopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkerId");
+
+                    b.HasIndex("WorkshopId");
+
+                    b.ToTable("WorkerWorkshops");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Workshop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("Address")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Director")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int?>("ProductionId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductionId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Workshops");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Implementer", "User")
+                        .WithMany("Details")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.DetailProduct", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Detail", "Detail")
+                        .WithMany("DetailProducts")
+                        .HasForeignKey("DetailId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DatabaseImplement.Models.Product", "Product")
+                        .WithMany("Details")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Detail");
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.DetailProduction", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Detail", "Detail")
+                        .WithMany("DetailProductions")
+                        .HasForeignKey("DetailId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DatabaseImplement.Models.Production", "Production")
+                        .WithMany("Details")
+                        .HasForeignKey("ProductionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Detail");
+
+                    b.Navigation("Production");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Machine", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Guarantor", "Guarantor")
+                        .WithMany("Machines")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Guarantor");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Product", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Machine", "Machine")
+                        .WithMany()
+                        .HasForeignKey("MachineId");
+
+                    b.HasOne("DatabaseImplement.Models.Implementer", "User")
+                        .WithMany("Products")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Machine");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Production", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Implementer", "User")
+                        .WithMany("Productions")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Worker", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Guarantor", "Guarantor")
+                        .WithMany("Workers")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Guarantor");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.WorkerMachine", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Machine", "Machine")
+                        .WithMany("Workers")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DatabaseImplement.Models.Worker", "Worker")
+                        .WithMany("WorkerMachines")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Machine");
+
+                    b.Navigation("Worker");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.WorkerWorkshop", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Worker", "Worker")
+                        .WithMany("WorkerWorkshops")
+                        .HasForeignKey("WorkerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("DatabaseImplement.Models.Workshop", "Workshop")
+                        .WithMany("Workers")
+                        .HasForeignKey("WorkshopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Worker");
+
+                    b.Navigation("Workshop");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Workshop", b =>
+                {
+                    b.HasOne("DatabaseImplement.Models.Production", "Production")
+                        .WithMany("Workshops")
+                        .HasForeignKey("ProductionId");
+
+                    b.HasOne("DatabaseImplement.Models.Guarantor", "User")
+                        .WithMany("Workshops")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Production");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
+                {
+                    b.Navigation("DetailProductions");
+
+                    b.Navigation("DetailProducts");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Guarantor", b =>
+                {
+                    b.Navigation("Machines");
+
+                    b.Navigation("Workers");
+
+                    b.Navigation("Workshops");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Implementer", b =>
+                {
+                    b.Navigation("Details");
+
+                    b.Navigation("Productions");
+
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Machine", b =>
+                {
+                    b.Navigation("Workers");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Product", b =>
+                {
+                    b.Navigation("Details");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Production", b =>
+                {
+                    b.Navigation("Details");
+
+                    b.Navigation("Workshops");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Worker", b =>
+                {
+                    b.Navigation("WorkerMachines");
+
+                    b.Navigation("WorkerWorkshops");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Workshop", b =>
+                {
+                    b.Navigation("Workers");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/Course/DatabaseImplement/Migrations/20240430182642_time.cs b/Course/DatabaseImplement/Migrations/20240430182642_time.cs
new file mode 100644
index 0000000..4818ef2
--- /dev/null
+++ b/Course/DatabaseImplement/Migrations/20240430182642_time.cs
@@ -0,0 +1,27 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DatabaseImplement.Migrations
+{
+    public partial class time : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<DateTime>(
+                name: "DateCreate",
+                table: "Details",
+                type: "datetime2",
+                nullable: false,
+                defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified));
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "DateCreate",
+                table: "Details");
+        }
+    }
+}
diff --git a/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs b/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
index f409ead..cd7adcf 100644
--- a/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
+++ b/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
@@ -33,6 +33,9 @@ namespace DatabaseImplement.Migrations
                     b.Property<double>("Cost")
                         .HasColumnType("float");
 
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("datetime2");
+
                     b.Property<string>("Name")
                         .IsRequired()
                         .HasColumnType("nvarchar(max)");
@@ -489,15 +492,15 @@ namespace DatabaseImplement.Migrations
                         .WithMany("Workshops")
                         .HasForeignKey("ProductionId");
 
-                    b.HasOne("DatabaseImplement.Models.Guarantor", "Guarantor")
+                    b.HasOne("DatabaseImplement.Models.Guarantor", "User")
                         .WithMany("Workshops")
                         .HasForeignKey("UserId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("Guarantor");
-
                     b.Navigation("Production");
+
+                    b.Navigation("User");
                 });
 
             modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
diff --git a/Course/DatabaseImplement/Models/Detail.cs b/Course/DatabaseImplement/Models/Detail.cs
index 45988de..c3a8f90 100644
--- a/Course/DatabaseImplement/Models/Detail.cs
+++ b/Course/DatabaseImplement/Models/Detail.cs
@@ -14,6 +14,8 @@ namespace DatabaseImplement.Models
 		[Required]
 		public double Cost { get; set; }
 		[Required]
+		public DateTime DateCreate { get; set; } = DateTime.Now;
+		[Required]
 		public int UserId { get; set; }
 		[ForeignKey("DetailId")]
 		public virtual List<DetailProduct> DetailProducts { get; set; } = new();
@@ -31,7 +33,8 @@ namespace DatabaseImplement.Models
 				Id = model.Id,
 				Name = model.Name,
 				Cost = model.Cost,
-				UserId = model.UserId
+				UserId = model.UserId,
+				DateCreate = model.DateCreate
 			};
 		}
 		public static Detail Create(DetailViewModel model)
@@ -41,7 +44,8 @@ namespace DatabaseImplement.Models
 				Id = model.Id,
 				Name = model.Name,
 				Cost = model.Cost,
-				UserId = model.UserId
+				UserId = model.UserId,
+				DateCreate = model.DateCreate
 			};
 		}
 		public void Update(DetailBindingModel model)
@@ -56,7 +60,8 @@ namespace DatabaseImplement.Models
 			Id = Id,
 			Name = Name,
 			Cost = Cost,
-			UserId = UserId
+			UserId = UserId,
+			DateCreate = DateCreate
 		};
 	}
 }
diff --git a/Course/DatabaseImplement/Models/Workshop.cs b/Course/DatabaseImplement/Models/Workshop.cs
index ef24b57..bd8ec1f 100644
--- a/Course/DatabaseImplement/Models/Workshop.cs
+++ b/Course/DatabaseImplement/Models/Workshop.cs
@@ -35,7 +35,6 @@ namespace DatabaseImplement.Models
 		}
 		[ForeignKey("WorkshopId")]
 		public List<WorkerWorkshop> Workers { get; set; } = new();
-		public virtual Guarantor Guarantor { get; set; }
 		public static Workshop? Create(FactoryGoWorkDatabase context, WorkshopBindingModel model)
 		{
 			return new Workshop()