How to define relationships programmatically in Entity Framework 4.1's Code-First Fluent API

Question

I\'m playing around with the new EF4.1 unicorn love.

I\'m trying to understand the different ways I can use code-first to programatically

Answer 1

Here you have examples you are looking for:

public class User
{
    public int Id { get; set; }
    ...
    public Foo Foo { get; set; }
    public Team Team { get; set; }
    public UserStuff UserStuff { get; set; }
}

public class Team
{
    public int Id { get; set; }
    ...
    public ICollection Users { get; set; }
}

public class Foo
{
    public int Id { get; set; }
    ...
}

public class UserStuff
{
    public int Id { get; set; }
    ...
}

public class Context : DbContext
{
    public DbSet Users { get; set; }
    public DbSet Foos { get; set; }
    public DbSet Teams { get; set; }
    public DbSet UserStuff { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity()
            .HasRequired(u => u.Team)
            .WithMany(t => t.Users);

        modelBuilder.Entity()
            .HasOptional(u => u.Foo)
            .WithRequired();

        modelBuilder.Entity()
            .HasRequired(u => u.UserStuff)
            .WithRequiredPrincipal();
    }
}