C#•10mo ago

Trying To Use The UserManager.IsInRoleAsync() Function In My Controller

I'm trying to retrieve different information based on a user who is login in but which what role? I am not getting anywhere, Visual Studio is saying I cannot convert from "System.Security.Claims.ClaimsPrincipal" to "Microsoft.AspNetCore.Identity.IdentityUser". Is there something I am missing?

namespace parentnchild.Controllers
{
    public class InitialController : Controller
    {
        private readonly ApplicationDbContext _db;
        private readonly UserManager<IdentityUser> _userManager;

        public InitialController(ApplicationDbContext context, UserManager<IdentityUser> userManager)
        {
            _db = context;
            _userManager = userManager;
        }

        /* GET METHOD */
        /* This is the initial view in our flow of registering a property as a parent. It just displays the search input box without any other information on the page */
        public IActionResult InitialView()
        {

            if (_userManager.IsInRoleAsync(User, "NORTH"))
            {
                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("NORTH")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "SOUTH"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("SOUTH")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "EAST"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("EAST")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "WEST"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("WEST")).ToList();
                return View(results);
            }
            else
            {
                List<LIS> results = _db.LIS.ToList();
                return View(results);
            }

        }
}

namespace parentnchild.Controllers
{
    public class InitialController : Controller
    {
        private readonly ApplicationDbContext _db;
        private readonly UserManager<IdentityUser> _userManager;

        public InitialController(ApplicationDbContext context, UserManager<IdentityUser> userManager)
        {
            _db = context;
            _userManager = userManager;
        }

        /* GET METHOD */
        /* This is the initial view in our flow of registering a property as a parent. It just displays the search input box without any other information on the page */
        public IActionResult InitialView()
        {

            if (_userManager.IsInRoleAsync(User, "NORTH"))
            {
                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("NORTH")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "SOUTH"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("SOUTH")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "EAST"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("EAST")).ToList();
                return View(results);
            }
            else if (_userManager.IsInRoleAsync(User, "WEST"))
            {

                List<LIS> results = _db.LIS.Where(s => s.Sector.Contains("WEST")).ToList();
                return View(results);
            }
            else
            {
                List<LIS> results = _db.LIS.ToList();
                return View(results);
            }

        }
}

4 Replies

statto1974•10mo ago

IsInRoleAsync is expectinging an IdentityUser. The inherited User property from Controller is of type ClaimsPrincipal. You need to get the IdentityUser from _userManger first using one of the claims from the ClaimsPrincipal. var user = await _userManager.FindByIdAsync(id); Where id is a variable pulled out of one of the claims in the User property

Bulelani BotmanOP•10mo ago

I saw this using gemini but I thought it was probably mad. I assumed that the user since she/he is already login I would'nt have to search for them once again?

statto1974•10mo ago

You can use the IsInRole method of ClaimsPrincipal rather than doing a round trip to the database, but need to check that the user's roles are being added as claims User.IsInRole("NORTH")

Bulelani BotmanOP•10mo ago

I will definitely try that! I come back later with an answer

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Trying To Use The UserManager.IsInRoleAsync() Function In My Controller