Question

当我将两个实体链接到一个具有相同herited导航属性的实体时，我无法生成我的数据库.. 我看到我可以复制该物业＆＃34; House＆＃34;并指定每种类型的InverseProperty，但我不会集中财产。 （当然我在该属性中有更多关联的代码）

public abstract class DbEntity
{
    [Key]
    public int Id { get; set; }
}

[Table("Houses")]
public class House : DbEntity
{
    public string Color { get; set; }

    [InverseProperty("House")]
    public virtual ICollection<Garden> Gardens { get; set; }

    [InverseProperty("House")]
    public virtual ICollection<Room> Rooms { get; set; }
}


public abstract class HousePart : DbEntity
{
    public string Color { get; set; }

    public int HouseId { get; set; }
    [ForeignKey("HouseId")]
    public virtual House House { get; set; }
}
[Table("Gardens")]
public class Garden : HousePart {}
[Table("Rooms")]
public class Room : HousePart {}

House：FromRole：NavigationProperty＆＃39; House＆＃39;无效。键入＆＃39;房间＆＃39; FromRole＆＃39; House_Rooms_Target＆＃39;在AssociationType＆＃39; House_Rooms＆＃39;必须与花园＆＃39;花园相匹配声明此NavigationProperty的位置。

谢谢你有一个很好的方法来集中实现属性。

Answer 1

它的工作就是这样：

 protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Garden>()
        .HasRequired(c => c.House)
        .WithMany(d => d.Gardens)
        .HasForeignKey(d => d.HouseId);

        modelBuilder.Entity<Room>()
          .HasRequired(c => c.House)
          .WithMany(d => d.Rooms)
          .HasForeignKey(d => d.HouseId);

        base.OnModelCreating(modelBuilder);
    }

实体框架继承InverseProperty

1 个答案: