同一类的实体framefork地图两个列表属性6

Question

我的班级是怎么

public class DocumentSale 
{ 
    public List<DocumentSale> FollowDocuments {get; set;} 
    public List<DocumentSale> BaseDocuments {get; set;} 
} 

如何将它映射在实体框架？我得到一个错误

“FK_dbo.DocumentSaleDocumentSales_public.saledocument_DocumentSa” 的关系 “DocumentSaleDocumentSales” 已经存在

我的数据库是Postgres的9.4.9

Answer 1

这就是我需要的：

public class DocumentSale 
{ 
    public List<DocumentSale> FollowDocuments {get; set;} 
    public List<DocumentSale> BaseDocuments {get; set;} 
} 

    modelBuilder.Entity<DocumentSale>() 
     .HasMany<DocumentSale>(c => c.baseDocuments) 
     .WithMany(c => c.followUpDocuments) 
     .Map(
     cs => 
      { 
       cs.MapLeftKey("followdocid"); 
       cs.MapRightKey("basedocid"); 
       cs.ToTable("basefollow"); 
      } 
     ); 

Answer 2

你可以尝试这样的事情

public class DocumentSale 
{ 
    [Key] 
    public int Id { get; set; } 
    public int? FollowDocumentId { get; set; } 
    public int? BaseDocumentId { get; set; } 

    public virtual DocumentSale FollowDocument { get; set; } 
    public virtual DocumentSale BaseDocument { get; set; } 

    [ForeignKey(nameof(FollowDocumentId))] 
    public virtual List<DocumentSale> FollowDocuments { get; set; } 
    [ForeignKey(nameof(BaseDocumentId))] 
    public virtual List<DocumentSale> BaseDocuments { get; set; } 
}