MVC Identity 2 using FormsAuthenticationTicket

Question

I am replacing the (HttpContext.Current.User) IPrincipal with a custom version so I can store more information login and the user. I have done this before using the FormsAu

Answer 1

This approach works for me (Using MVC4), slightly different from above.

public class ApplicationUser : IdentityUser
{
    public async Task GenerateUserIdentityAsync(UserManager manager)
    {
        // Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
        var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
        // Add custom user claims here
        userIdentity.AddClaim(new Claim("MyApp:OrganizationId", OrganizationID.ToString()));

        return userIdentity;
    }

    public int OrganizationID { get; set; }
}

Extension method. Note you should use claimsPrincipal variable (instead of principal variable) to obtain the claims. I think that's a little mistake in the excelent answer of @trailmax (sorry for not comment this in your answer, my reputation doesn't allow me). Also, I use IIdentity instead of IPrincipal

public static class IdentityExtensions
    {
        public static int GetOrganizationId(this IIdentity principal)
        {
            var claimsPrincipal = principal as ClaimsIdentity;
            if (claimsPrincipal == null)
            {
                throw new Exception("User is not logged in!");
            }

            var nameClaim = claimsPrincipal.Claims.FirstOrDefault(c => c.Type == "MyApp:OrganizationId");
            if (nameClaim != null)
            {
                return int.Parse(nameClaim.Value);
            }

            throw new Exception("ID doesn't exists");
        }
    }

And then, I use the extension method in the controller like this:

var organizationId = User.Identity.GetOrganizationId();

Hope this is useful to someone.