diff --git a/CaseAccounting/CaseAccountingContracts/BindingModels/LawyerBindingModel.cs b/CaseAccounting/CaseAccountingContracts/BindingModels/LawyerBindingModel.cs
index 89e0e94..f881a17 100644
--- a/CaseAccounting/CaseAccountingContracts/BindingModels/LawyerBindingModel.cs
+++ b/CaseAccounting/CaseAccountingContracts/BindingModels/LawyerBindingModel.cs
@@ -1,5 +1,6 @@
 using CaseAccountingContracts.ViewModels;
 using CaseAccountingDataModels.Models;
+using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -19,7 +20,7 @@ namespace CaseAccountingContracts.BindingModels
 
         public int Experience { get; set; }
 
-        public int SpecializationId { get; set; }
+        public int? SpecializationId { get; set; }
 
         public int UserId { get; set; }
 
@@ -29,6 +30,13 @@ namespace CaseAccountingContracts.BindingModels
 
         public List<ContractViewModel> ContractViewModels { get; set; } = new();
 
+        public LawyerBindingModel() { }
+
+        [JsonConstructor]
+        public LawyerBindingModel(Dictionary<int, ContractViewModel> Contracts)
+        {
+            this.Contracts = Contracts.ToDictionary(x => x.Key, x => (IContractModel)x.Value);
+        }
 
     }
 }
diff --git a/CaseAccounting/CaseAccountingContracts/ViewModels/LawyerViewModel.cs b/CaseAccounting/CaseAccountingContracts/ViewModels/LawyerViewModel.cs
index 35f6781..df0d236 100644
--- a/CaseAccounting/CaseAccountingContracts/ViewModels/LawyerViewModel.cs
+++ b/CaseAccounting/CaseAccountingContracts/ViewModels/LawyerViewModel.cs
@@ -18,7 +18,7 @@ namespace CaseAccountingContracts.ViewModels
 		public string Patronymic { get; set; } = string.Empty;
 		[DisplayName("Опыт работы")]
 		public int Experience { get; set; }
-		public int SpecializationId { get; set; }
+		public int? SpecializationId { get; set; }
 		[DisplayName("Специализация")]
 		public string Specialization { get; set; } = string.Empty;
         public int UserId { get; set; }
diff --git a/CaseAccounting/CaseAccountingCustomerView/Controllers/Lawyers.cs b/CaseAccounting/CaseAccountingCustomerView/Controllers/Lawyers.cs
index 6526b85..1362c3e 100644
--- a/CaseAccounting/CaseAccountingCustomerView/Controllers/Lawyers.cs
+++ b/CaseAccounting/CaseAccountingCustomerView/Controllers/Lawyers.cs
@@ -1,5 +1,6 @@
 using CaseAccountingContracts.BindingModels;
 using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.Models;
 using Microsoft.AspNetCore.Mvc;
 
 namespace CaseAccountingCustomerView.Controllers
@@ -23,7 +24,14 @@ namespace CaseAccountingCustomerView.Controllers
                 throw new Exception("403");
             }
             lawyerModel.UserId = APIUser.User.Id;
-            lawyerModel.SpecializationId = 0;
+            lawyerModel.SpecializationId = null;
+            var dict = new Dictionary<int, IContractModel>();
+            foreach (var element in lawyerModel.ContractViewModels)
+            {
+                var contract = APIUser.GetRequest<ContractViewModel>($"api/contract/get?id={element.Id}");
+                dict.Add(element.Id, contract);
+            }
+            lawyerModel.Contracts = dict;
             APIUser.PostRequest("api/lawyer/create", lawyerModel);
             Response.Redirect("/Home/Lawyers");
         }
diff --git a/CaseAccounting/CaseAccountingCustomerView/Views/Home/Lawyers.cshtml b/CaseAccounting/CaseAccountingCustomerView/Views/Home/Lawyers.cshtml
index cfbaba5..e508a2d 100644
--- a/CaseAccounting/CaseAccountingCustomerView/Views/Home/Lawyers.cshtml
+++ b/CaseAccounting/CaseAccountingCustomerView/Views/Home/Lawyers.cshtml
@@ -49,10 +49,10 @@
 								@item.Experience
 							</td>
 							<td>
-								@item.SpecializationName
+								@item.Specialization
 							</td>
 							<td>
-								<a id="update-button-@item.Id" class="btn btn-secondary" asp-controller="Lawyer" asp-action="Update" asp-route-id="@item.Id">Изменить</a>
+								<a id="update-button-@item.Id" class="btn btn-secondary" asp-controller="Lawyers" asp-action="Update" asp-route-id="@item.Id">Изменить</a>
 							</td>
 							<td>
 								<a id="remove-button-@item.Id" class="btn btn-secondary remove-btn" data-id="@item.Id">Удалить</a>
diff --git a/CaseAccounting/CaseAccountingCustomerView/Views/Specializations/AddLawyer.cshtml b/CaseAccounting/CaseAccountingCustomerView/Views/Specializations/AddLawyer.cshtml
index 1965f6b..60ac8f0 100644
--- a/CaseAccounting/CaseAccountingCustomerView/Views/Specializations/AddLawyer.cshtml
+++ b/CaseAccounting/CaseAccountingCustomerView/Views/Specializations/AddLawyer.cshtml
@@ -54,4 +54,4 @@
     </div>
 }
 
-<script src="~/js/Specializations/specialization-add-lawyer.js" asp-append-version="true"></script>
\ No newline at end of file
+<script src="~/js/Specializations/specializations-add-lawyer.js" asp-append-version="true"></script>
\ No newline at end of file
diff --git a/CaseAccounting/CaseAccountingCustomerView/wwwroot/js/Specializations/specializations-add-lawyer.js b/CaseAccounting/CaseAccountingCustomerView/wwwroot/js/Specializations/specializations-add-lawyer.js
index 5db763e..d6ee26e 100644
--- a/CaseAccounting/CaseAccountingCustomerView/wwwroot/js/Specializations/specializations-add-lawyer.js
+++ b/CaseAccounting/CaseAccountingCustomerView/wwwroot/js/Specializations/specializations-add-lawyer.js
@@ -16,6 +16,7 @@ window.addEventListener("load", async () => {
         });
         lawyers = lawyersResponse;
 
+        console.log(lawyers);
         lawyers.forEach((lawyer) => {
             createLawyerOption(lawyer);
         });
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDatabase.cs b/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDatabase.cs
index 75477ba..55243a9 100644
--- a/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDatabase.cs
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDatabase.cs
@@ -18,8 +18,8 @@ namespace CaseAccountingDataBaseImplement
                     Host=localhost;
                     Port=5432;
                     Database=CaseAccountingDatabase;
-                    Username=courseuser;
-                    Password=courseuser");
+                    Username=postgres;
+                    Password=postgres");
             }
             base.OnConfiguring(optionsBuilder);
         }
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.Designer.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.Designer.cs
new file mode 100644
index 0000000..5ba152e
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.Designer.cs
@@ -0,0 +1,554 @@
+// <auto-generated />
+using System;
+using CaseAccountingDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CaseAccountingDataBaseImplement.Migrations
+{
+    [DbContext(typeof(CaseAccountingDatabase))]
+    [Migration("20230519143905_migrSpecializationNull")]
+    partial class migrSpecializationNull
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Annotation")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Applicant")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Defendant")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("SpecializationId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SpecializationId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Cases");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseDeal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DealId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("DealId");
+
+                    b.ToTable("CaseDeals");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseLawyer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("LawyerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("LawyerId");
+
+                    b.ToTable("CaseLawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<decimal>("Coast")
+                        .HasColumnType("numeric");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Service")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Contracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Responsibilities")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Subject")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Deals");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.DealContract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ContractId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DealId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ContractId");
+
+                    b.HasIndex("DealId");
+
+                    b.ToTable("DealContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Hearing", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Information")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Hearings");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Experience")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Patronymic")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SpecializationId")
+                        .IsRequired()
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Surname")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SpecializationId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Lawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.LawyerContract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ContractId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("LawyerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ContractId");
+
+                    b.HasIndex("LawyerId");
+
+                    b.ToTable("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Specializations");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Specialization", "Specialization")
+                        .WithMany("Cases")
+                        .HasForeignKey("SpecializationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Cases")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Specialization");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseDeal", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("Deals")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Deal", "Deal")
+                        .WithMany("CaseDeals")
+                        .HasForeignKey("DealId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("Deal");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseLawyer", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("CaseLawyers")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Lawyer", "Lawyer")
+                        .WithMany("CaseLawyers")
+                        .HasForeignKey("LawyerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("Lawyer");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Contracts")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Deals")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.DealContract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Contract", "Contract")
+                        .WithMany("DealContracts")
+                        .HasForeignKey("ContractId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Deal", "Deal")
+                        .WithMany("Contracts")
+                        .HasForeignKey("DealId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Contract");
+
+                    b.Navigation("Deal");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Hearing", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("Hearings")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Hearings")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Specialization", "Specialization")
+                        .WithMany("Lawyers")
+                        .HasForeignKey("SpecializationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Lawyers")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Specialization");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.LawyerContract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Contract", "Contract")
+                        .WithMany("LawyerContracts")
+                        .HasForeignKey("ContractId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Lawyer", "Lawyer")
+                        .WithMany("LawyerContracts")
+                        .HasForeignKey("LawyerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Contract");
+
+                    b.Navigation("Lawyer");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Specializations")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.Navigation("CaseLawyers");
+
+                    b.Navigation("Deals");
+
+                    b.Navigation("Hearings");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.Navigation("DealContracts");
+
+                    b.Navigation("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.Navigation("CaseDeals");
+
+                    b.Navigation("Contracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.Navigation("CaseLawyers");
+
+                    b.Navigation("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.Navigation("Cases");
+
+                    b.Navigation("Lawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.User", b =>
+                {
+                    b.Navigation("Cases");
+
+                    b.Navigation("Contracts");
+
+                    b.Navigation("Deals");
+
+                    b.Navigation("Hearings");
+
+                    b.Navigation("Lawyers");
+
+                    b.Navigation("Specializations");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.cs
new file mode 100644
index 0000000..3985bb8
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519143905_migrSpecializationNull.cs
@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CaseAccountingDataBaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class migrSpecializationNull : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.Designer.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.Designer.cs
new file mode 100644
index 0000000..6176a40
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.Designer.cs
@@ -0,0 +1,551 @@
+// <auto-generated />
+using System;
+using CaseAccountingDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace CaseAccountingDataBaseImplement.Migrations
+{
+    [DbContext(typeof(CaseAccountingDatabase))]
+    [Migration("20230519145356_migrSpecializationNullAttempt2")]
+    partial class migrSpecializationNullAttempt2
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Annotation")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Applicant")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Defendant")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("SpecializationId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SpecializationId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Cases");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseDeal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DealId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("DealId");
+
+                    b.ToTable("CaseDeals");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseLawyer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("LawyerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("LawyerId");
+
+                    b.ToTable("CaseLawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<decimal>("Coast")
+                        .HasColumnType("numeric");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Service")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Contracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Responsibilities")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Subject")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Deals");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.DealContract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ContractId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DealId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ContractId");
+
+                    b.HasIndex("DealId");
+
+                    b.ToTable("DealContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Hearing", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CaseId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Information")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CaseId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Hearings");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Experience")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Patronymic")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SpecializationId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Surname")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SpecializationId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Lawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.LawyerContract", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ContractId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("LawyerId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ContractId");
+
+                    b.HasIndex("LawyerId");
+
+                    b.ToTable("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Specializations");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Specialization", "Specialization")
+                        .WithMany("Cases")
+                        .HasForeignKey("SpecializationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Cases")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Specialization");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseDeal", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("Deals")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Deal", "Deal")
+                        .WithMany("CaseDeals")
+                        .HasForeignKey("DealId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("Deal");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.CaseLawyer", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("CaseLawyers")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Lawyer", "Lawyer")
+                        .WithMany("CaseLawyers")
+                        .HasForeignKey("LawyerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("Lawyer");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Contracts")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Deals")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.DealContract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Contract", "Contract")
+                        .WithMany("DealContracts")
+                        .HasForeignKey("ContractId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Deal", "Deal")
+                        .WithMany("Contracts")
+                        .HasForeignKey("DealId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Contract");
+
+                    b.Navigation("Deal");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Hearing", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Case", "Case")
+                        .WithMany("Hearings")
+                        .HasForeignKey("CaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Hearings")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Case");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Specialization", "Specialization")
+                        .WithMany("Lawyers")
+                        .HasForeignKey("SpecializationId");
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Lawyers")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Specialization");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.LawyerContract", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Contract", "Contract")
+                        .WithMany("LawyerContracts")
+                        .HasForeignKey("ContractId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.Lawyer", "Lawyer")
+                        .WithMany("LawyerContracts")
+                        .HasForeignKey("LawyerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Contract");
+
+                    b.Navigation("Lawyer");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
+                        .WithMany("Specializations")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Case", b =>
+                {
+                    b.Navigation("CaseLawyers");
+
+                    b.Navigation("Deals");
+
+                    b.Navigation("Hearings");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Contract", b =>
+                {
+                    b.Navigation("DealContracts");
+
+                    b.Navigation("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Deal", b =>
+                {
+                    b.Navigation("CaseDeals");
+
+                    b.Navigation("Contracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Lawyer", b =>
+                {
+                    b.Navigation("CaseLawyers");
+
+                    b.Navigation("LawyerContracts");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.Specialization", b =>
+                {
+                    b.Navigation("Cases");
+
+                    b.Navigation("Lawyers");
+                });
+
+            modelBuilder.Entity("CaseAccountingDataBaseImplement.Models.User", b =>
+                {
+                    b.Navigation("Cases");
+
+                    b.Navigation("Contracts");
+
+                    b.Navigation("Deals");
+
+                    b.Navigation("Hearings");
+
+                    b.Navigation("Lawyers");
+
+                    b.Navigation("Specializations");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.cs
new file mode 100644
index 0000000..6840ab6
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/20230519145356_migrSpecializationNullAttempt2.cs
@@ -0,0 +1,59 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CaseAccountingDataBaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class migrSpecializationNullAttempt2 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Lawyers_Specializations_SpecializationId",
+                table: "Lawyers");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "SpecializationId",
+                table: "Lawyers",
+                type: "integer",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "integer");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Lawyers_Specializations_SpecializationId",
+                table: "Lawyers",
+                column: "SpecializationId",
+                principalTable: "Specializations",
+                principalColumn: "Id");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Lawyers_Specializations_SpecializationId",
+                table: "Lawyers");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "SpecializationId",
+                table: "Lawyers",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "integer",
+                oldNullable: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Lawyers_Specializations_SpecializationId",
+                table: "Lawyers",
+                column: "SpecializationId",
+                principalTable: "Specializations",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/CaseAccountingDatabaseModelSnapshot.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/CaseAccountingDatabaseModelSnapshot.cs
index 6723299..7d4655b 100644
--- a/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/CaseAccountingDatabaseModelSnapshot.cs
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Migrations/CaseAccountingDatabaseModelSnapshot.cs
@@ -239,7 +239,7 @@ namespace CaseAccountingDataBaseImplement.Migrations
                         .IsRequired()
                         .HasColumnType("text");
 
-                    b.Property<int>("SpecializationId")
+                    b.Property<int?>("SpecializationId")
                         .HasColumnType("integer");
 
                     b.Property<string>("Surname")
@@ -448,9 +448,7 @@ namespace CaseAccountingDataBaseImplement.Migrations
                 {
                     b.HasOne("CaseAccountingDataBaseImplement.Models.Specialization", "Specialization")
                         .WithMany("Lawyers")
-                        .HasForeignKey("SpecializationId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .HasForeignKey("SpecializationId");
 
                     b.HasOne("CaseAccountingDataBaseImplement.Models.User", "User")
                         .WithMany("Lawyers")
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs
index 820d1d0..a1f88cf 100644
--- a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs
@@ -27,9 +27,8 @@ namespace CaseAccountingDataBaseImplement.Models
         [Required]
         public int Experience { get; set; }
 
-        [Required]
-        public int SpecializationId { get; set; }
-        public virtual Specialization Specialization { get; set; } = new();
+        public int? SpecializationId { get; set; }
+        public virtual Specialization? Specialization { get; set; } = new();
 
         [Required]
         public int UserId { get; set; }
@@ -38,6 +37,22 @@ namespace CaseAccountingDataBaseImplement.Models
         [ForeignKey("LawyerId")]
         public virtual List<CaseLawyer> CaseLawyers { get; set; } = new();
 
+        private Dictionary<int, ICaseModel>? _cases;
+
+        [NotMapped]
+        public Dictionary<int, ICaseModel> Cases
+        {
+            get 
+            {
+                if (_cases == null)
+                {
+                    _cases = CaseLawyers.ToDictionary(
+                        x => x.CaseId, x => x.Case as ICaseModel);
+                }
+                return _cases;
+            }
+        }
+
         [ForeignKey("LawyerId")]
         public virtual List<LawyerContract> LawyerContracts { get; set; } = new();
 
@@ -71,9 +86,13 @@ namespace CaseAccountingDataBaseImplement.Models
                 Patronymic = model.Patronymic,
                 Experience = model.Experience,
                 SpecializationId = model.SpecializationId,
-                Specialization = context.Specializations.FirstOrDefault(x => x.Id == model.SpecializationId) ?? throw new Exception("specialization not found"),
+                Specialization = context.Specializations.FirstOrDefault(x => model.SpecializationId.HasValue && x.Id == model.SpecializationId),
                 UserId = model.UserId,
-                User = context.Users.FirstOrDefault(x => x.Id == model.UserId) ?? throw new Exception("User not found")
+                User = context.Users.FirstOrDefault(x => x.Id == model.UserId) ?? throw new Exception("User not found"),
+                LawyerContracts = model.Contracts.Select(x => new LawyerContract
+                {
+                    Contract = context.Contracts.First(y => y.Id == x.Key)
+                }).ToList()
             };
         }
 
@@ -130,7 +149,8 @@ namespace CaseAccountingDataBaseImplement.Models
             Patronymic = Patronymic,
             Experience = Experience,
             SpecializationId = SpecializationId,
-            UserId = UserId
+            UserId = UserId,
+            Specialization = Specialization?.Name ?? "Не указан"
         };
     }
 }
diff --git a/CaseAccounting/CaseAccountingDataModels/Models/ILawyerModel.cs b/CaseAccounting/CaseAccountingDataModels/Models/ILawyerModel.cs
index 9ad9276..6086f13 100644
--- a/CaseAccounting/CaseAccountingDataModels/Models/ILawyerModel.cs
+++ b/CaseAccounting/CaseAccountingDataModels/Models/ILawyerModel.cs
@@ -12,7 +12,7 @@ namespace CaseAccountingDataModels.Models
 		string Surname { get; }	
 		string Patronymic { get; }
 		int Experience { get; }
-		int SpecializationId { get; }
+		int? SpecializationId { get; }
         int UserId { get; }
         Dictionary<int, IContractModel> Contracts { get; }
     }