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在另一个问题中，我解释了我的目标，即在我的 ASP.Net MVC 5 网站中创建具有不同功能的 2 种不同类型的用户。我想知道如何修改我当前的数据库模型以根据它们的类型保存相关信息。我目前的型号如下：

public class User : IUser
{
    public User()
        : this(String.Empty)
    {
    }

    public User(string userName)
    {
        UserName = userName;
        Id = Guid.NewGuid().ToString();
    }

    [Key]
    public string Id { get; set; }

    [Required]
    public string UserName { get; set; }

    [Required]
    public string FirstName { get; set; }

    [Required]
    public string LastName { get; set; }

    public string Phone { get; set; }
    public string MobilePhone { get; set; }

    [Required]
    [DataType(DataType.EmailAddress)]
    public string Email { get; set; }

    public virtual IList<UserAddress> Addresses { get; set; }
}

public class Restaurant
{
    [Key]
    public int ID { get; set; }

    [Required]
    public string Name { get; set; }

    public virtual IList<RestaurantAddress> Addresses { get; set; }

    public virtual IList<RestaurantFood> Menu { get; set; }

    public virtual IList<Review> Reviews { get; set; }

    [DataType(DataType.Url)]
    public string Website { get; set; }

    [DataType(DataType.PhoneNumber)]
    public string Phone { get; set; }

    [DataType(DataType.PhoneNumber)]
    public string Fax { get; set; }

    [DataType(DataType.EmailAddress)]
    public string Email { get; set; }

    public int Seats { get; set; }

    public double AverageRating { get; set; }
    public double AveragePrice { get; set; }
}

我想到的一个解决方案是将User类的附加信息移动到另一个类，并在基本用户信息类中保存相关模型的外键。就像是：

public class User : IUser
{
    public User()
        : this(String.Empty)
    {
    }

    public User(string userName)
    {
        UserName = userName;
        Id = Guid.NewGuid().ToString();
    }

    [Key]
    public string Id { get; set; }

    [Required]
    public string UserName { get; set; }

    public virtual ExtendedUser NormalUserInfo { get; set; }
    public virtual Restaurant RestaurantInfo { get; set; }
}

public class ExtendedUser
{
    [Required]
    public string FirstName { get; set; }

    [Required]
    public string LastName { get; set; }

    public string Phone { get; set; }
    public string MobilePhone { get; set; }

    [Required]
    [DataType(DataType.EmailAddress)]
    public string Email { get; set; }

    public virtual IList<UserAddress> Addresses { get; set; }
}

public class Restaurant
{
    [Key]
    public int ID { get; set; }

    [Required]
    public string Name { get; set; }

    public virtual IList<RestaurantAddress> Addresses { get; set; }

    public virtual IList<RestaurantFood> Menu { get; set; }

    public virtual IList<Review> Reviews { get; set; }

    [DataType(DataType.Url)]
    public string Website { get; set; }

    [DataType(DataType.PhoneNumber)]
    public string Phone { get; set; }

    [DataType(DataType.PhoneNumber)]
    public string Fax { get; set; }

    [DataType(DataType.EmailAddress)]
    public string Email { get; set; }

    public int Seats { get; set; }

    public double AverageRating { get; set; }
    public double AveragePrice { get; set; }
}

在控制器中：

    User user = BuildUser();
    ExtendedUser normal = BuildNormalUser();
    Restaurant rest = BuildRestaurant();
    if (model.Type == UserType.NormalUser)
        user.NormalUserInfo = normal;
    else
        user.RestaurantInfo = normal;

但是，我不确定这是正确的做法。

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