Entity Frameworkを挿入したレコードは、私は2つのクラスを持っている2番目のフィールド

Question

私はEntity Frameworkの6

と子オブジェクトによって挿入する問題が生じています

を挿入しませんこのようなコードを持つレコード：私はそれを保存するときに、それはRoleInstance罰金にレコードを挿入し

RoleInstance ri = new RoleInstance { RoleId = 1, 
            EnvirCode = "ENVIR", 
            PathId = 5, 
            Published = 'Y' 
            ActiveDirectoryGroups = new List<ActiveDirectoryGroups>() 
}; 

ri.ActiveDirectoryGroups.Add(new ActiveDirectoryGroup() { 
GroupName = "GROUP NAME", 
AuditGroup = 'Y' 
}; 

_db.Context.Add(ri); 

は、Entity Frameworkは設定されていませんActivityDirectoryGroupの両方のための鍵は（RoleId、EnvirCode）であればA RoleInstanceが複数ActiveDirectoryGroupsを持つことはできません

modelBuilder.Entity<ActiveDirectoryGroup>() 
      .HasRequired(e => e.RoleInstance) 
      .WithMany(e => e.ActiveDirectoryGroups) 
      .HasForeignKey(e => new {e.RoleId, e.EnvirCode}); 

Answer 1

：

これは次のように私のmodelBuilderが見えるものです。 ActiveDirecoryGroupsのキーをIdに、または（RoleId、EnvirCode、Id）を1対多の関係に切り替えます。ここでは、Fluentと属性ベースのマッピングを混在させる必要はありません。

はここで作業モデルです：

using System; 
using System.Linq; 
using System.Collections.Generic; 
using System.ComponentModel.DataAnnotations; 
using System.ComponentModel.DataAnnotations.Schema; 
using System.Data.Entity; 

namespace Ef6Test 
{ 

    public class Role 
    { 
     public long RoleId { get; set; } 
    } 
    public class RoutingPath 
    { 
     public int RoutingPathId { get; set; } 
    } 
    public class Environment 
    { 
     public string EnvironmentId { get; set; } 
    } 
    public class RoleInstance 
    { 
     [Key, Column(Order = 1)] 
     public long RoleId { get; set; } 
     [Key, Column(Order = 2)] 
     public string EnvirCode { get; set; } 

     public int PathId { get; set; } 

     public char Published { get; set; } 

     [ForeignKey("RoleId")] 
     public virtual Role Role { get; set; } 
     [ForeignKey("PathId")] 
     public virtual RoutingPath RoutingPath { get; set; } 
     [ForeignKey("EnvirCode")] 
     public virtual Environment Environment { get; set; } 

     public ICollection<ActiveDirectoryGroup> ActiveDirectoryGroups { get; } = new HashSet<ActiveDirectoryGroup>(); 
    } 

    public class ActiveDirectoryGroup 
    { 
     [DatabaseGenerated(DatabaseGeneratedOption.Identity), Key] 
     public int Id { get; set; } 

     public long RoleId { get; set; } 

     public string EnvirCode { get; set; } 
     public string GroupName { get; set; } 
     public string GroupGuid { get; set; } 
     public char AuditGroup { get; set; } 

     [ForeignKey("RoleId,EnvirCode")] 
     public virtual RoleInstance RoleInstance { get; set; } 
    } 

    class Db : DbContext 
    { 

     public DbSet<ActiveDirectoryGroup> ActiveDirectoryGroups { get; set; } 
     public DbSet<RoleInstance> RoleInstances { get; set; } 


     protected override void OnModelCreating(DbModelBuilder modelBuilder) 
     { 
      base.OnModelCreating(modelBuilder); 
     } 

    } 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      Database.SetInitializer(new DropCreateDatabaseAlways<Db>()); 

      using (var db = new Db()) 
      { 
       db.Database.Initialize(false); 

       db.Database.Log = msg => Console.WriteLine(msg); 

       RoleInstance ri = new RoleInstance 
       { 
        Role = new Role() { RoleId = 1}, 
        Environment = new Environment() { EnvironmentId = "ENVIR" }, 
        RoutingPath = new RoutingPath() { RoutingPathId = 5 }, 
        Published = 'Y' 
       }; 

       ri.ActiveDirectoryGroups.Add(new ActiveDirectoryGroup() 
       { 
        GroupName = "GROUP NAME", 
        AuditGroup = 'Y' 
       }); 

       db.RoleInstances.Add(ri); 
       db.SaveChanges(); 


      } 

      using (var db = new Db()) 
      { 
       foreach (var g in db.ActiveDirectoryGroups) 
       { 
        Console.WriteLine($"RoleId: {g.RoleId}, EnvirCode: { g.EnvirCode}"); 
       } 
      } 

      Console.ReadKey(); 
     } 
    } 
}