I want to be able to extend the default implementation of IdentityRole to include fields like Description. It's easy enough to do this for IdentityUser because IdentityDbContext takes a generic parameter of type IdentityUser. However, IdentityDbContext doesn't allow you to do this for IdentityRole. How can I accomplish this?
I know I can create a basic DbContext, and implement my own IUserStore, so that I can use my own role class, but I really don't want to have to do that.
Any thoughts?
I have just gone through this pain myself. It actually turned out to be pretty simple. Just extend IdentityRole with your new properties.
public class ApplicationRole : IdentityRole { public ApplicationRole(string name) : base(name) { } public ApplicationRole() { } public string Description { get; set; } } Then you need to add the line
new public DbSet<ApplicationRole> Roles { get; set; } into your ApplicationDbContext class like this otherwise you will get errors.
public class ApplicationDbContext : IdentityDbContext<ApplicationUser> { public ApplicationDbContext() : base("DefaultConnection") {} new public DbSet<ApplicationRole> Roles { get; set; } } thats all I needed to do. Make sure you change all instances of IdentityRole to ApplicationRole including anything you are seeding. Also, dont forget to issue a "update-database" to apply the changes to your DB. Any existing rows in there won't be seen by your new RoleManager unless you have the "ApplicationRole" set as a discriminator. You can easily add this yourself.
HTH
Erik
UserManager<TUser> uses UserStore<TUser> as its user store (IUserStore). UserManager works with UserStore for adding and removing user to a role name as IUserRole.
Likewise, there are interfaces IRole & IRoleStore<TRole> for IdentityRole and RoleStore<TRole> where TRole is IdentityRole. This is to work plainly with Roles directly.
So you can inherit IdentityRole and add additional information. Use RoleStore<MyRole> to manage it along additional information.
RoleManager<TRole> provides core interaction methods for Role, which can use MyRoleStore.
MyIdentityRole.cs
public class MyIdentityRole: IdentityRole { public String Description { get; set;} } 
