How to seed an Admin user in EF Core 2.1.0?

Question

I have an ASP.NET Core 2.1.0 application using EF Core 2.1.0.

How do I go about seeding the database with Admin user and give him/her an Admin role? I cannot find an

Answer 1

ASP.Net Core 3.1

That's how I do it using the EntityTypeBuilder :

Role Configuration:

public class RoleConfiguration : IEntityTypeConfiguration
{
    private const string adminId = "2301D884-221A-4E7D-B509-0113DCC043E1";
    private const string employeeId = "7D9B7113-A8F8-4035-99A7-A20DD400F6A3";
    private const string sellerId = "78A7570F-3CE5-48BA-9461-80283ED1D94D";
    private const string customerId = "01B168FE-810B-432D-9010-233BA0B380E9";

    public void Configure(EntityTypeBuilder builder)
    {

        builder.HasData(
                new IdentityRole
                {
                    Id = adminId,
                    Name = "Administrator",
                    NormalizedName = "ADMINISTRATOR"
                },
                new IdentityRole
                {
                    Id = employeeId,
                    Name = "Employee",
                    NormalizedName = "EMPLOYEE"
                },
                new IdentityRole
                {
                    Id = sellerId,
                    Name = "Seller",
                    NormalizedName = "SELLER"
                },
                new IdentityRole
                {
                    Id = customerId,
                    Name = "Customer",
                    NormalizedName = "CUSTOMER"
                }
            );
    }
}

User Configuration:

public class AdminConfiguration : IEntityTypeConfiguration
{
    private const string adminId = "B22698B8-42A2-4115-9631-1C2D1E2AC5F7";

    public void Configure(EntityTypeBuilder builder)
    {
        var admin = new ApplicationUser
        {
            Id = adminId,
            UserName = "masteradmin",
            NormalizedUserName = "MASTERADMIN",
            FirstName = "Master",
            LastName = "Admin",
            Email = "Admin@Admin.com",
            NormalizedEmail = "ADMIN@ADMIN.COM",
            PhoneNumber = "XXXXXXXXXXXXX",
            EmailConfirmed = true,
            PhoneNumberConfirmed = true,
            BirthDate = new DateTime(1980,1,1),
            SecurityStamp = new Guid().ToString("D"),
            UserType = UserType.Administrator                
        };

        admin.PasswordHash = PassGenerate(admin);

        builder.HasData(admin);
    }

    public string PassGenerate(ApplicationUser user)
    {
        var passHash = new PasswordHasher();
        return passHash.HashPassword(user, "password");
    }
}

Assigning Roles To Users:

 public class UsersWithRolesConfig : IEntityTypeConfiguration>
    {
        private const string adminUserId = "B22698B8-42A2-4115-9631-1C2D1E2AC5F7";
        private const string adminRoleId = "2301D884-221A-4E7D-B509-0113DCC043E1";

        public void Configure(EntityTypeBuilder> builder)
        {
            IdentityUserRole iur = new IdentityUserRole
            {
                RoleId = adminRoleId,
                UserId = adminUserId
            };

            builder.HasData(iur);
        }
    }

Finally in the DB Context class:

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    base.OnModelCreating(modelBuilder);

    //If you have alot of data configurations you can use this (works from ASP.Net core 2.2):

    //This will pick up all configurations that are defined in the assembly
    modelBuilder.ApplyConfigurationsFromAssembly(Assembly.GetExecutingAssembly());

    //Instead of this:
    modelBuilder.ApplyConfiguration(new RoleConfiguration());
    modelBuilder.ApplyConfiguration(new AdminConfiguration());
    modelBuilder.ApplyConfiguration(new UsersWithRolesConfig());
}