asp.net-core-mvcseedingasp.net-core-6.0
Trouble with Seeding data in ASP.NET Core 6
I am currently having problem while trying to seed my data in ASP.NET Core 6. After running the application, I don't see any data updated in my database. Below is my code for DbInitializer.cs and Program.cs.
This is my DbInitializer.cs file:
using e_commerce.Models;
namespace e_commerce.Data
{
public class DataSeeder
{
private readonly ShopDbContext shopDbContext;
public DataSeeder(ShopDbContext shopDbContext)
{
this.shopDbContext = shopDbContext;
}
public void Seed()
{
if (!shopDbContext.Users.Any())
{
var User_List = new List<User>()
{
new User()
{
UserId = 1,
FirstName = "David",
LastName = "D",
Email = "davidd.com",
Password = "1234"
},
new User()
{
UserId=2,
FirstName = "Alex",
LastName = "S",
Email="[email protected]",
Password="1234"
}
};
shopDbContext.Users.AddRange(User_List);
shopDbContext.SaveChanges();
}
//Products
List<Product_Seller> MacBook_Sellers = new List<Product_Seller>();
Product_Seller macbook_seller_1 = new Product_Seller();
macbook_seller_1.SellerID = 1;
macbook_seller_1.ProductID = 1;
Product_Seller macbook_seller_2 = new Product_Seller();
macbook_seller_2.SellerID = 2;
macbook_seller_2.ProductID = 1;
MacBook_Sellers.Add(macbook_seller_1);
MacBook_Sellers.Add(macbook_seller_2);
// adding elements using add() method
if (!shopDbContext.Products.Any())
{
var Product_list = new List<Product>()
{
new Product()
{
ProductID = 1,
ProductName = "Macbook Pro 2022",
ProductImageUrl = "https://i.ibb.co/7nWnHc7/macbookpro.jpg",
ProductPrice = 2000.00,
Products_Sellers = MacBook_Sellers
},
new Product()
{
ProductID = 2,
ProductName = "Dell XPS",
ProductImageUrl = "https://i.ibb.co/KXxJsfM/dellxps.jpg",
ProductPrice = 1999.00,
SellerID = 2
}
};
shopDbContext.Products.AddRange(Product_list);
shopDbContext.SaveChanges();
}
//Sellers
List<Product_Seller> store_1_product = new List<Product_Seller>();
Product_Seller product1 = new Product_Seller();
product1.SellerID = 1;
product1.ProductID = 1;
Product_Seller product2 = new Product_Seller();
product2.SellerID = 1;
product2.ProductID = 2;
store_1_product.Add(product1);
store_1_product.Add(product2);
if (!shopDbContext.Sellers.Any())
{
var Seller_list = new List<Seller>()
{
new Seller()
{
SellerId = 1,
SellerFirstName = "Da",
SellerLastName = "Du",
SellerEmail = "[email protected]",
SellerPassword = "1234",
SellerPhone = 1900,
SellerReview = 5,
Products_Sellers = store_1_product
},
new Seller()
{
SellerId = 2,
SellerFirstName = "Ng",
SellerLastName = "Le",
SellerEmail = "[email protected]",
SellerPassword = "1234",
SellerPhone = 1800,
SellerReview = 5,
ProductID = 1
}
} ;
shopDbContext.Sellers.AddRange(Seller_list);
shopDbContext.SaveChanges();
}
}
}
}
And this is my Program.cs file
using e_commerce.Data;
using Microsoft.EntityFrameworkCore;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
var connectionString = builder.Configuration.GetConnectionString("DefaultConnectionString");
builder.Services.AddDbContext<ShopDbContext>(options => options.UseSqlServer(connectionString));
builder.Services.AddControllersWithViews();
builder.Services.AddTransient<DataSeeder>();
//can be placed among other "AddScoped" - above: var app = builder.Build();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
//seed
app.Run();
if (args.Length == 1 && args[0].ToLower() == "seeddata")
SeedData(app);
//Seed Data
void SeedData(IHost app)
{
var scopedFactory = app.Services.GetService<IServiceScopeFactory>();
using (var scope = scopedFactory.CreateScope())
{
var service = scope.ServiceProvider.GetService<DataSeeder>();
service.Seed();
}
}
Thank you for any help.
Solution
I do some change based on your code. And I get the data in the database.
Seller
public class Seller
{
public int SellerId { get; set; }
public string SellerFirstName { get; set; }
public string SellerLastName { get; set; }
public string SellerEmail { get; set; }
public string SellerPassword { get; set; }
public int SellerPhone { get; set; }
public int SellerReview { get; set; }
//Relationships
public List<Product_Seller> Products_Sellers { get; set; }
}
Product
public class Product
{
public int ProductID { get; set; }
public string ProductName { get; set; }
public string ProductImageUrl { get; set; }
public double ProductPrice { get; set; }
//Relationships
public List<Product_Seller> Products_Sellers { get; set; }
}
ShopDbContext
public class ShopDbContext : DbContext
{
public ShopDbContext(DbContextOptions<ShopDbContext> options) : base(options)
{
}
public DbSet<Seller> Sellers { get; set; }
public DbSet<Product> Products { get; set; }
public DbSet<Product_Seller> Products_Sellers { get; set; }
public DbSet<User> Users { get; set; }
protected override void OnModelCreating(ModelBuilder builder)
{
base.OnModelCreating(builder);
builder.Entity<Product_Seller>().HasKey(i => new { i.ProductID, i.SellerID });
}
}
DataSeeder
public class DataSeeder
{
public static void Initialize(IServiceProvider serviceProvider)
{
using (var shopDbContext = new ShopDbContext(
serviceProvider.GetRequiredService<
DbContextOptions<ShopDbContext>>()))
{
if (!shopDbContext.Users.Any())
{
var User_List = new List<User>()
{
new User()
{
FirstName = "David",
LastName = "D",
Email = "davidd.com",
Password = "1234"
},
new User()
{
FirstName = "Alex",
LastName = "S",
Email="[email protected]",
Password="1234"
}
};
shopDbContext.Users.AddRange(User_List);
shopDbContext.SaveChanges();
}
if (!shopDbContext.Products.Any() && !shopDbContext.Sellers.Any())
{
var product1 = new Product()
{
ProductName = "Macbook Pro 2022",
ProductImageUrl = "https://i.ibb.co/7nWnHc7/macbookpro.jpg",
ProductPrice = 2000.00
};
var product2 = new Product()
{
ProductName = "Dell XPS",
ProductImageUrl = "https://i.ibb.co/KXxJsfM/dellxps.jpg",
ProductPrice = 1999.00
};
var seller1 = new Seller()
{
SellerFirstName = "Da",
SellerLastName = "Du",
SellerEmail = "[email protected]",
SellerPassword = "1234",
SellerPhone = 1900,
SellerReview = 5
};
var seller2 = new Seller()
{
SellerFirstName = "Ng",
SellerLastName = "Le",
SellerEmail = "[email protected]",
SellerPassword = "1234",
SellerPhone = 1800,
SellerReview = 5
};
var pslist = new List<Product_Seller>()
{
new Product_Seller() { Product = product1, Seller = seller1 },
new Product_Seller() { Product = product1, Seller = seller2 },
new Product_Seller() { Product = product2, Seller = seller1 },
};
shopDbContext.Products_Sellers.AddRange(pslist);
shopDbContext.SaveChanges();
}
}
}
}
Program
using Microsoft.EntityFrameworkCore;
using seed3Many.Data;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllersWithViews();
var connectionString = builder.Configuration.GetConnectionString("DefaultConnectionString");
builder.Services.AddDbContext<ShopDbContext>(options => options.UseSqlServer(connectionString));
var app = builder.Build();
using (var scope = app.Services.CreateScope())
{
var services = scope.ServiceProvider;
DataSeeder.Initialize(services);
}
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();
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