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.
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; }
}
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; }
}
what I currently want is to make both types of users register as a base Identity and to keep both in a single table as in the inheritance example on asp.net
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'.
My context class:
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; }
...
}
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);
I tried setting ApplicationClass to an abstract class, but no luck. Any help would be appreciated.
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.
@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.