Question

我一直在与流利，注释及其组合进行摔跤，但无法找出以下实体和上下文配置为何会生成具有重复外键的迁移。我已经阅读了所有其他帖子并尝试了所有建议的解决方案，每个解决方案似乎都是一个不同的组合，但我仍然无法让EF给我一个外键迁移。它总是产生这个额外的。

public class REOProperty
{
    public virtual ICollection<PropertyPhotoUrl> PropertyPhotoUrls { get; set; }

    public Guid REOPropertyId { get; set; }

}
public class PropertyPhotoUrl
{
    public Guid REOPropertyId { get; set; }
    public virtual REOProperty REOProperty { get; set; }

    public Guid PropertyPhotoUrlId { get; set; }
    public string PhotoUrl { get; set; }
}

带上下文

public class REODbContext:DbContext
{
    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Conventions.Remove<System.Data.Entity.ModelConfiguration.Conventions.ManyToManyCascadeDeleteConvention>();
        modelBuilder.Conventions.Remove<System.Data.Entity.ModelConfiguration.Conventions.OneToManyCascadeDeleteConvention>();

        modelBuilder.Entity<REOProperty>()
            .HasKey(a => a.REOPropertyId)
            .Property(a => a.REOPropertyId)
            .HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity);
        modelBuilder.Entity<PropertyPhotoUrl>()
            .HasKey(a => a.PropertyPhotoUrlId)
            .Property(a => a.PropertyPhotoUrlId)
            .HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity);
        modelBuilder.Entity<PropertyPhotoUrl>()
            .HasRequired(a => a.REOProperty)
            .WithMany(a=>a.PropertyPhotoUrls)
            .HasForeignKey(a => a.REOPropertyId);
    }
}

在子项上生成具有重复外键的迁移 PropertyPhotoUrl实体。

CreateTable(
            "dbo.PropertyPhotoUrls",
            c => new
                {
                    PropertyPhotoUrlId = c.Guid(nullable: false, identity: true),
                    REOPropertyId = c.Guid(nullable: false),
                    PhotoUrl = c.String(),
                    REOProperty_REOPropertyId = c.Guid(),
                })
            .PrimaryKey(t => t.PropertyPhotoUrlId)
            .ForeignKey("dbo.REOProperties", t => t.REOPropertyId)
            .ForeignKey("dbo.REOProperties", t => t.REOProperty_REOPropertyId)
            .Index(t => t.REOPropertyId)
            .Index(t => t.REOProperty_REOPropertyId);

我以前见过这个问题，通常可以通过更改流畅的代码来解决。如果我尝试手动编辑迁移以获得我想要的内容，那么当我进行查询时，ef会抛出异常。

我在这里做错了吗？

Answer 1

使用它：

public class REOProperty
{
    [InverseProperty("REOProperty")]
    public virtual ICollection<PropertyPhotoUrl> PropertyPhotoUrls { get; set; }

    public Guid REOPropertyId { get; set; }

}

public class PropertyPhotoUrl
{
    public Guid REOPropertyId { get; set; }

    [ForeignKey("REOPropertyId")]
    [InverseProperty("PropertyPhotoUrls")]
    public virtual REOProperty REOProperty { get; set; }

    public Guid PropertyPhotoUrlId { get; set; }
    public string PhotoUrl { get; set; }
}

EF6迁移中生成的重复外键

1 个答案: