Fluent API 和一对一

Question

我正在尝试将 ApplicationRole (IdentityRole) 与父角色相关联，因为它是角色的类型。我想更好地理解 Fluent API 以完成此操作。

public class ApplicationRole : IdentityRole
{
    [StringLength(128)]
    [DisplayName("Based On Role")]
    public string BasedOnRoleId { get; set; }

    [ForeignKey("BasedOnRoleId")]
    public virtual ApplicationRole BasedOnRole { get; set; }
}

我目前有这样的东西不起作用...当然：

modelBuilder.Entity<ApplicationRole>()
                .HasKey(e => e.BasedOnRoleId)
                .HasRequired(e => e.BasedOnRole)
                .WithOptional(e => e.??)

Answer 1

查看这些答案：

Adding 0..1 relation in EF code first

EF 1 to 1..* relationship