Question

我有以下型号，我定义好吗？

用户是主要实体，可以有0..1到*（零/一对多关系）地址。

2.User可以有0..1到1（一对一userPass）

这是主表

public class User
{

    [Key]
    [Required]
    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public string UserId { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Email    { get; set; }
    public string Phone { get; set; }
    public string PhoneWork { get; set; }
    public string WorkingAt { get; set; }

    public virtual UserPass UserPass { get; set; }

    public virtual ICollection<Address> Addresses { get; set; }
}

public class ConfigModelDbContext : DbContext
{
    public DbSet<User> User { get; set; }
    public DbSet<Address> Addresses { get; set; }
    public DbSet<UserPass> UserPasses { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();

        modelBuilder.Entity<User>()
            .HasOptional(c => c.Addresses).WithRequired(addresses => new User());

        modelBuilder.Entity<User>()
            .HasOptional(c => c.UserPass).WithRequired(pass => new User());

    }
}

地址类

public class Address
{
    [Key]
    [ForeignKey("User")]
    public string UserId { get; set; }
    public string UserAddress { get; set; }
}

Userpass类

public class UserPass
{
    [Key]
    [ForeignKey("User")]
    public string UserId { get; set; }
    public string User { get; set; }
    public string Password { get; set; }
}

我还创建了与上面相同的类，但是它可以直接在数据库表上创建关系吗？

Answer 1

起初我总是让你使用数据注释而不是流畅的api。

然后更正如下所示的AddressClass：

public class Address
        {
            [Key]
            public int Id { get; set; }
            [ForeignKey("UserId")]
            public User User { get; set; }
            public string UserId { get; set; }
            public string UserAddress { get; set; }
        }

这将创建Ralationship。有关详细信息，请阅读Code First DataAnnotations

代码优先模型定义

1 个答案: