How to Seed Users and Roles with Code First Migration using Identity ASP.NET Core

Question

I have created a new clean asp.net 5 project (rc1-final). Using Identity Authentication I just have the ApplicationDbContext.cs with the following code:

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Answer 1

You can seed Users and Roles in OnModelCreating() method inside IdentityDbContext.cs file as shown below. Notice that the keys have to be predefined to avoid seeding new users and roles everytime this method is executed.

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

        //Seeding a  'Administrator' role to AspNetRoles table
        modelBuilder.Entity().HasData(new IdentityRole {Id = "2c5e174e-3b0e-446f-86af-483d56fd7210", Name = "Administrator", NormalizedName = "ADMINISTRATOR".ToUpper() });


        //a hasher to hash the password before seeding the user to the db
        var hasher = new PasswordHasher();


        //Seeding the User to AspNetUsers table
        modelBuilder.Entity().HasData(
            new IdentityUser
            {
                Id = "8e445865-a24d-4543-a6c6-9443d048cdb9", // primary key
                UserName = "myuser",
                NormalizedUserName = "MYUSER",
                PasswordHash = hasher.HashPassword(null, "Pa$$w0rd")
            }
        );


        //Seeding the relation between our user and role to AspNetUserRoles table
        modelBuilder.Entity>().HasData(
            new IdentityUserRole
            {
                RoleId = "2c5e174e-3b0e-446f-86af-483d56fd7210", 
                UserId = "8e445865-a24d-4543-a6c6-9443d048cdb9"
            }
        );
        

    }