ef relation

MySolution/InventoryManagement/Components/Accessary.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace InventoryManagement.Components
+{
+    internal class Accessary
+    {
+        public int Id { get; set; }
+        public int ProductId { get; set; }
+        public string Name { get; set; }
+        public string? Description { get; set; }
+
+        public Product CompatibleProduct { get; set; }
+    }
+}

MySolution/InventoryManagement/Components/InventoryContext.cs

@@ -10,6 +10,7 @@ namespace InventoryManagement.Components
     internal class InventoryContext : DbContext
     {
         public DbSet<Product> Products { get; set; }
+        public DbSet<Accessary> Accessaries { get; set; }
 
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {

MySolution/InventoryManagement/Components/InventoryManager.cs

@@ -1,4 +1,5 @@
-using System;
+using Microsoft.EntityFrameworkCore;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -106,15 +107,50 @@ namespace InventoryManagement.Components
             }
         }
 
+        public void AddAccessary(int productId, string name, string description)
+        {
+            using (var context = new InventoryContext())
+            {
+                var product = context.Products.Find(productId);
+                if (product == null)
+                {
+                    Console.WriteLine("Product not found.");
+                    return;
+                }
+
+                context.Entry(product).Collection(e => e.CompatibleAccessaries).Load();
+
+                Accessary acc = new Accessary()
+                {
+                    ProductId = productId,
+                    Name = name,
+                    Description = description,
+                };
+
+                product.CompatibleAccessaries.Add(acc);
+                context.SaveChanges();
+                Console.WriteLine($"{acc.Name} added.");
+            }
+        }
+
         public void ShowInventory()
         {
             using (var context = new InventoryContext())
             {
                 Console.WriteLine("********** Current Inventory **********");
+                Console.WriteLine("***** Products *****");
                 foreach (var product in context.Products)
                 {
                     Console.WriteLine($"ID: {product.Id}, Name: {product.Name}, Quantity: {product.Quantity}");
                 }
+                Console.WriteLine("********************");
+                Console.WriteLine();
+                Console.WriteLine("***** Accesarry *****");
+                foreach (var accesarry in context.Accessaries.Include(e => e.CompatibleProduct))
+                {
+                    Console.WriteLine($"ID: {accesarry.Id}, Name: {accesarry.Name}, Compatible product: {accesarry.CompatibleProduct.Name}");
+                }
+                Console.WriteLine("*********************");
                 Console.WriteLine("****************************************");
             }
         }

MySolution/InventoryManagement/Components/Product.cs

@@ -15,5 +15,7 @@ namespace InventoryManagement.Components
         public int Id { get; }
         public string Name { get; set; }
         public int Quantity { get; set; }
+
+        public ICollection<Accessary> CompatibleAccessaries { get; set; }
     }
 }

MySolution/InventoryManagement/Migrations/20231017084526_accessary.Designer.cs

@@ -0,0 +1,91 @@
+// <auto-generated />
+using InventoryManagement.Components;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace InventoryManagement.Migrations
+{
+    [DbContext(typeof(InventoryContext))]
+    [Migration("20231017084526_accessary")]
+    partial class accessary
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.12")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("Accessaries");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(450)");
+
+                    b.Property<int>("Quantity")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.HasOne("InventoryManagement.Components.Product", null)
+                        .WithMany("CompatibleAccessaries")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Product", b =>
+                {
+                    b.Navigation("CompatibleAccessaries");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

MySolution/InventoryManagement/Migrations/20231017084526_accessary.cs

@@ -0,0 +1,47 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace InventoryManagement.Migrations
+{
+    /// <inheritdoc />
+    public partial class accessary : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Accessaries",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    ProductId = table.Column<int>(type: "int", nullable: false),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Description = table.Column<string>(type: "nvarchar(max)", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Accessaries", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Accessaries_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Accessaries_ProductId",
+                table: "Accessaries",
+                column: "ProductId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Accessaries");
+        }
+    }
+}

MySolution/InventoryManagement/Migrations/20231018015608_Acc-Prod.Designer.cs

@@ -0,0 +1,93 @@
+// <auto-generated />
+using InventoryManagement.Components;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace InventoryManagement.Migrations
+{
+    [DbContext(typeof(InventoryContext))]
+    [Migration("20231018015608_Acc-Prod")]
+    partial class AccProd
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.12")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("Accessaries");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(450)");
+
+                    b.Property<int>("Quantity")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.HasOne("InventoryManagement.Components.Product", "CompatibleProduct")
+                        .WithMany("CompatibleAccessaries")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("CompatibleProduct");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Product", b =>
+                {
+                    b.Navigation("CompatibleAccessaries");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

MySolution/InventoryManagement/Migrations/20231018015608_Acc-Prod.cs

@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace InventoryManagement.Migrations
+{
+    /// <inheritdoc />
+    public partial class AccProd : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}

MySolution/InventoryManagement/Migrations/InventoryContextModelSnapshot.cs

@@ -21,6 +21,31 @@ namespace InventoryManagement.Migrations
 
             SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
 
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("Accessaries");
+                });
+
             modelBuilder.Entity("InventoryManagement.Components.Product", b =>
                 {
                     b.Property<int>("Id")
@@ -43,6 +68,22 @@ namespace InventoryManagement.Migrations
 
                     b.ToTable("Products");
                 });
+
+            modelBuilder.Entity("InventoryManagement.Components.Accessary", b =>
+                {
+                    b.HasOne("InventoryManagement.Components.Product", "CompatibleProduct")
+                        .WithMany("CompatibleAccessaries")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("CompatibleProduct");
+                });
+
+            modelBuilder.Entity("InventoryManagement.Components.Product", b =>
+                {
+                    b.Navigation("CompatibleAccessaries");
+                });
 #pragma warning restore 612, 618
         }
     }

MySolution/InventoryManagement/Program.cs

@@ -16,7 +16,7 @@ namespace InventoryManagement
             {
                 Console.WriteLine();
                 Console.WriteLine("Pease Enter the command.");
-                Console.WriteLine("(show: Show current Inventory, add: Add new product, buy: Buy product, sell: Sell product)");
+                Console.WriteLine("(show: Show current Inventory, add: Add new product, buy: Buy product, sell: Sell product, acc: Add accessary)");
                 Console.Write("CMD> ");
                 string cmd = Console.ReadLine().ToLower();
                 switch (cmd)
@@ -81,6 +81,18 @@ namespace InventoryManagement
                                 InventoryManager.SellProduct(name, quantity);
                             break;
                         }
+                    case "acc":
+                        {
+                            Console.Write("\tProduct id: ");
+                            string productId = Console.ReadLine();
+                            int pId = int.Parse(productId);
+                            Console.Write("\tAccessary name: ");
+                            string name = Console.ReadLine();
+                            Console.Write("\tAccessary description: ");
+                            string desc = Console.ReadLine();
+                            InventoryManager.AddAccessary(pId, name, desc);
+                            break;
+                        }
                 }
 
             }