无法使用实体框架将复杂对象插入数据库

Question

我正在开发一个 asp.net mvc 应用程序，它具有以下实体类：

public class Person
    {
        public int PersonID { get; set; }
        public string PersonPicAddress { get; set; }

        public virtual List<Person_Local> PersonLocal { get; set; }
}

public class Person_Local
{
    public int PersonID { get; set; }

    public int CultureID { get; set; }

    public string PersonName { get; set; }

    public string PersonFamily { get; set; }

    public string PersonAbout { get; set; }

    public virtual Culture Culture { get; set; }

    public virtual Person Person { get; set; }
}

public class Culture
{
    public int CultureID { get; set; }

    [Required()]
    public string CultureName { get; set; }

    [Required()]    
    public string CultureDisplay { get; set; }

    public virtual List<HomePage> HomePage { get; set; }

    public virtual List<Person_Local> PersonLocak { get; set; }
}

我用 [Httppost] 属性定义了一个动作，它接受来自视图的复杂对象。

这里是动作：

[HttpPost]
public ActionResult CreatePerson([Bind(Prefix = "Person")]Person obj)
        {

      AppDbContext da = new AppDbContext();

      //Only getting first PersonLocal from list of PersonLocals
      obj.PersonLocal[0].Person = obj;

       da.Persons.Add(obj);

       da.SaveChanges();

       return Jsono(...);

}

但是当它抛出如下错误时：

Exception:Thrown: "Invalid column name 'Culture_CultureID'." (System.Data.SqlClient.SqlException)
A System.Data.SqlClient.SqlException was thrown: "Invalid column name 'Culture_CultureID'."

还有插入语句：

ADO.NET:Execute Reader "insert [dbo].[Person_Local]([PersonID], [PersonName], [PersonFamily], [PersonAbout], [Culture_CultureID])
values (@0, @1, @2, @3, null)
select [CultureID]
from [dbo].[Person_Local]
where @@ROWCOUNT > 0 and [CultureID] = scope_identity()"
The command text "insert [dbo].[Person_Local]([PersonID], [PersonName], [PersonFamily], [PersonAbout], [Culture_CultureID])
values (@0, @1, @2, @3, null)
select [CultureID]
from [dbo].[Person_Local]
where @@ROWCOUNT > 0 and [CultureID] = scope_identity()" was executed on connection "Data Source=bab-pc;Initial Catalog=MainDB;Integrated Security=True;Application Name=EntityFrameworkMUE", building a SqlDataReader.

问题出在哪里？

已编辑：

包含的 EntityConfigurations 代码：

   public class CultureConfig : EntityTypeConfiguration<Culture>
    {
        public CultureConfig()
        {

            HasKey(x => x.CultureID);

            Property(x => x.CultureName);

            Property(x => x.CultureDisplay);

            ToTable("Culture");
        }
    }

    public class PersonConfig : EntityTypeConfiguration<Person>
    {
        public PersonConfig()
        {

            HasKey(x => x.PersonID);

            Property(x=>x.PersonPicAddress);

            ToTable("Person");
        }
    }

    public class Person_LocalConfig : EntityTypeConfiguration<Person_Local>
    {
        public Person_LocalConfig()
        {
            HasKey(x => x.PersonID);

            HasKey(x => x.CultureID);

            Property(x=>x.PersonName);

            Property(x => x.PersonFamily);

            Property(x => x.PersonAbout);

            ToTable("Person_Local");

          }

    }

Answer 1

尝试从 Person_Local 类中删除字段 CultureID 和 PersonID。因为你已经有了字段 Person 和 Culture

Answer 2

您的架构似乎与您的模型不同步。确保您了解this blog 中描述的 EF 代码优先架构更新功能。如果您需要更复杂的架构迁移，this question 的答案中有一些其他方法。