在ASP.NET MVC5识别系统进一步扩展ApplicationUser类 [英] Farther extending ApplicationUser class in ASP.NET MVC5 Identity system

问题描述

我创建的大学一个简单的应用程序，其中一个学生可以进行一些类型的请求，然后通过特定的专业员工处理。

I'm creating a simple application for university where a student can make some type of request which is then processed by an employee of particular speciality.

我想用默认MVC5标识系统，并使用TPH模式来扩展ApplicationUser类。所以我添加的共同属性的ApplicationUser：

I would like to use default MVC5 identity system and to extend the ApplicationUser class using TPH pattern. So I added the common properties to the ApplicationUser:

public class ApplicationUser : IdentityUser
    {
        [Required]
        public string FirstName { get; set; }
        [Required]
        public string LastName { get; set; }
        [Required]
        public string Email { get; set; }
    }

然后我创建了两个类它继承了ApplicationUser：

then I created two classes which inherits the ApplicationUser:

public class Student : ApplicationUser
    {
        public string PersonalNumber { get; set; }
        public bool Monitor { get; set; }
        public virtual Group Group { get; set; }
        public virtual ICollection<Request> Requests { get; set; }
    }

public class Employee : ApplicationUser
    {
        public virtual EmployeeSpeciality EmployeeSpeciality { get; set; }
        public virtual ICollection<Request> Requests { get; set; }
    }

我目前要的是让这两种类型的用户登记为基础的身份，并保持双方在一个表中的<一个href=\"http://www.asp.net/mvc/tutorials/getting-started-with-ef-5-using-mvc-4/implementing-inheritance-with-the-entity-framework-in-an-asp-net-mvc-application\">inheritance例如在asp.net

因为我认为，这将是足以初始化的AccountController用户VAR然后将其传递给的UserManager作为一个学生或者作为雇员。但是，试图作为一个学生我得到这个例外注册后：

As I thought, it would be enough to initialize user var in AccountController which is then passes to the UserManager as a Student or as an Employee. But after trying to register as a Student i'm getting this exception:

Exception Details: System.Data.SqlClient.SqlException: Invalid column name 'PersonalNumber'.
Invalid column name 'Monitor'.
Invalid column name 'EmployeeSpeciality_Id'.
Invalid column name 'Group_Id'.

我的上下文类：

public class EntityContext : IdentityDbContext
    {
        public EntityContext()
            : base("DbConnection")
        {
        }

        public DbSet<ApplicationUser> ApplicationUsers { get; set; }
        public DbSet<Student> Students { get; set; }
        public DbSet<Employee> Employees { get; set; }
        ...
    }

和控制器的行动的一部分：

and a part of controller's action:

public async Task<ActionResult> Register(RegisterViewModel model)
    {
        if (ModelState.IsValid)
        {
            var user = new Student()
            {
                UserName = model.UserName,
                FirstName = model.FirstName,
                LastName = model.LastName,
                Email = model.Email
            };
            var result = await UserManager.CreateAsync(user, model.Password);

我试着ApplicationClass设置为一个抽象类，但没有运气。任何帮助将是AP preciated。

I tried setting ApplicationClass to an abstract class, but no luck. Any help would be appreciated.

更新：这个问题是不是在code本身。我根本就没有做这些改变模型后回落（或更新）数据库。后一切正常就好了。

UPDATE: The problem wasn't in the code itself. I simply haven't dropped (or updated) the database after making these changes to the model. After it everything works just fine.

推荐答案

@Dragonheart：我想这个摄制，如果你删除你的上下文类的DBSet声明它会正常工作。该IdentityDbContext会处理你TPH模式，在表中添加一个鉴别列区分子类。

@Dragonheart: I tried this repro and it would work fine if you remove the DBSet declarations in you context class. The IdentityDbContext would handle you TPH pattern and add a Discriminator column in the table to differentiate the child classes.

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