Dotnet ef 核心关系

Question

当所有模型的主键名为Id时，我们如何建立一对多关系？

示例：

public class Organization {
    public long Id { get; set; }
    public List<Teacher> Teachers { get; set; }
}

public class Teacher {
    public long Id { get; set; }
    public long ??? { get; set; } // what do we call OrganizationId?
    public Organization Organization { get; set; }
}

Answer 1

带???的变量名应该叫OrganizationId。我将使用模型 Teacher.

的配置创建一个单独的 class

例如：

class TeacherConfiguration : IEntityTypeConfiguration<Teacher>
{
    public void Configure(EntityTypeBuilder<BoardCard> builder)
    {
        builder.HasKey(bc => bc.Id);
        builder.HasOne(bc => bc.Organization).WithMany(c => c.Teachers).HasForeignKey(bc => bc.OrganizationId).OnDelete(DeleteBehavior.Cascade).IsRequired();
    }
}