Добавить поле для изображения.

***
- Добавил поле в таблицу телефонов для хранения пути до изображеня.
- В миграцию добавил скрипт для установки пути до изображения по умолчанию.
***

#1

PhoneStore/Migrations/20220630161925_AddImageField.Designer.cs

+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using PhoneStore.Models;
+
+namespace PhoneStore.Migrations
+{
+    [DbContext(typeof(MobileContext))]
+    [Migration("20220630161925_AddImageField")]
+    partial class AddImageField
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "5.0.17");
+
+            modelBuilder.Entity("PhoneStore.Models.Basket", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("PhoneId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneId");
+
+                    b.ToTable("Baskets");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Brand", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Brands");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Address")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ContactPhone")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("PhoneId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("UserName")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PhoneId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Phone", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("BrandId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Image")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BrandId");
+
+                    b.ToTable("Phones");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Basket", b =>
+                {
+                    b.HasOne("PhoneStore.Models.Phone", "Phone")
+                        .WithMany()
+                        .HasForeignKey("PhoneId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Phone");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Order", b =>
+                {
+                    b.HasOne("PhoneStore.Models.Phone", "Phone")
+                        .WithMany()
+                        .HasForeignKey("PhoneId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Phone");
+                });
+
+            modelBuilder.Entity("PhoneStore.Models.Phone", b =>
+                {
+                    b.HasOne("PhoneStore.Models.Brand", "Brand")
+                        .WithMany()
+                        .HasForeignKey("BrandId");
+
+                    b.Navigation("Brand");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

PhoneStore/Migrations/20220630161925_AddImageField.cs

+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace PhoneStore.Migrations
+{
+    public partial class AddImageField : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Phones_Brands_BrandId",
+                table: "Phones");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "BrandId",
+                table: "Phones",
+                type: "INTEGER",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "INTEGER");
+
+            migrationBuilder.AddColumn<string>(
+                name: "Image",
+                table: "Phones",
+                type: "TEXT",
+                nullable: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Phones_Brands_BrandId",
+                table: "Phones",
+                column: "BrandId",
+                principalTable: "Brands",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+            
+            migrationBuilder.Sql(@$"UPDATE ""Phones""
+            SET ""Image"" = '~/Files/Phone/Images/DefaultImage.jpg'
+            WHERE ""Image"" IS NULL;");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Phones_Brands_BrandId",
+                table: "Phones");
+
+            migrationBuilder.DropColumn(
+                name: "Image",
+                table: "Phones");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "BrandId",
+                table: "Phones",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldNullable: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Phones_Brands_BrandId",
+                table: "Phones",
+                column: "BrandId",
+                principalTable: "Brands",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}

PhoneStore/Migrations/MobileContextModelSnapshot.cs

 // <auto-generated />
+using System;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
@@ -76,9 +77,12 @@ namespace PhoneStore.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("BrandId")
+                    b.Property<int?>("BrandId")
                         .HasColumnType("INTEGER");
 
+                    b.Property<string>("Image")
+                        .HasColumnType("TEXT");
+
                     b.Property<string>("Name")
                         .HasColumnType("TEXT");
 
@@ -118,9 +122,7 @@ namespace PhoneStore.Migrations
                 {
                     b.HasOne("PhoneStore.Models.Brand", "Brand")
                         .WithMany()
-                        .HasForeignKey("BrandId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .HasForeignKey("BrandId");
 
                     b.Navigation("Brand");
                 });

PhoneStore/Models/Phone.cs

@@ -7,5 +7,6 @@ namespace PhoneStore.Models
         public decimal Price { get; set; }
         public int? BrandId { get; set; }
         public Brand Brand { get; set; }
+        public string Image { get; set; }
     }
 }
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