Entity Framework 只有一个导航的一对多 属性：WithRequiredDependant？

Question

使用最新的 Entity Framework 我有一个 class 具有一对多的机智，在多边上只有一个导航 属性。

如MSDN: Entity Framework Fluent API - Relationships所述：

A one-directional (also called unidirectional) relationship is when a navigation property is defined on only one of the relationship ends and not on both.

简化：一个School有很多Students； School 和 Student 之间存在一对多关系，但 School 没有包含 Students

集合的 属性

class Student
{
    public int Id {get; set;}
    // a Student attends one School; foreign key SchoolId
    public int SchoolId {get; set;}
    public School School {get; set;}
}

class School
{
    public int Id {get; set;}
    // missing: public virtual ICollection<Studen> Students {get; set;}
}

在双向关系中，你可以在OnModelCreating中写出如下流利的API：

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Entity<Student>()
        .HasRequired(student => student.School)
        .WithMany(school => school.Students)
        .HasForeignKey(student => student.SchoolId);
}

由于缺少School.Students，我需要做一些额外的事情。根据开头的 link 看来我必须对 WithRequiredDependant 做点什么。

// Summary:
//     Configures the relationship to be required without a navigation property
//     on the other side of the relationship. The entity type being configured will
//     be the dependent and contain a foreign key to the principal. The entity type
//     that the relationship targets will be the principal in the relationship.
//
public ForeignKeyNavigationPropertyConfiguration WithRequiredDependent();

modelBuilder.Entity<Student>()
    .HasRequired(student => student.School)
    .WithRequiredDependent();

唉，这不行。 SchoolId 未建模为外键。

我需要什么流利的API？

Answer 1

我希望我的想法是正确的version/edition：

modelBuilder.Entity<Student>()
    .HasRequired(student => student.School)
  //.WithMany(school => school.Students)
    .WithMany()
    .HasForeignKey(student => student.SchoolId);