find user role in identity asp mvc - asp.net

Question

I am using this code for login. How can I find a user role when user login?
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
if (!ModelState.IsValid)
{
return View(model);
}
var user = await UserManager.FindByNameAsync(model.Username);
if (user != null)
{
if (!await UserManager.IsEmailConfirmedAsync(user.Id))
{
ViewBag.errorMessage = "You must have a confirmed email to log on.";
return View("Error");
}
}
var result = await SignInManager.PasswordSignInAsync(model.Username, model.Password, model.RememberMe, shouldLockout: false);
switch (result)
{
case SignInStatus.Success:
return RedirectToLocal(returnUrl);
case SignInStatus.LockedOut:
return View("Lockout");
case SignInStatus.RequiresVerification:
return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
case SignInStatus.Failure:
default:
ModelState.AddModelError("", "Invalid login attempt.");
return View(model);
}
}

Answer 1

user.Roles will fetch list of Roles user belong to. Based on your requirement you can do something like below
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
{
if (!ModelState.IsValid)
{
return View(model);
}
var user = await UserManager.FindByNameAsync(model.Username);
if (user != null)
{
if (!await UserManager.IsEmailConfirmedAsync(user.Id))
{
ViewBag.errorMessage = "You must have a confirmed email to log on.";
return View("Error");
}
}
var result = await SignInManager.PasswordSignInAsync(model.Username, model.Password, model.RememberMe, shouldLockout: false);
switch (result)
{
case SignInStatus.Success:
if(await UserManager.IsInRoleAsync(user.Id,"Admin")) //<= Checking Role and redirecting accordingly.
return RedirectToAction("Index", "Admin");
else
return RedirectToAction("Index", "User");
case SignInStatus.LockedOut:
return View("Lockout");
case SignInStatus.RequiresVerification:
return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
case SignInStatus.Failure:
default:
ModelState.AddModelError("", "Invalid login attempt.");
return View(model);
}
}
Based on our discussion if you want to fetch all the roles from database you need to do below
Add ApplicationRoleManager class to your IdentityConfig.cs as below
public class ApplicationRoleManager : RoleManager<IdentityRole>
{
public ApplicationRoleManager(IRoleStore<IdentityRole, string> store)
: base(store)
{
}
public static ApplicationRoleManager Create(IdentityFactoryOptions<ApplicationRoleManager> options, IOwinContext context)
{
var manager = new ApplicationRoleManager(new RoleStore<IdentityRole>(context.Get<ApplicationDbContext>()));
return manager;
}
}
Assign RoleManager to Owin Context, so add below to starup.auth.cs
public void ConfigureAuth(IAppBuilder app)
{
// Configure the db context, user manager and signin manager to use a single instance per request
app.CreatePerOwinContext(ApplicationDbContext.Create);
app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
//other code here
}
In AccountController.cs add a property
private ApplicationRoleManager _roleManager;
public ApplicationRoleManager RoleManager
{
get
{
return _roleManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationRoleManager>();
}
private set
{
_roleManager = value;
}
}
Pass it in the Constructor
public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager,ApplicationRoleManager roleManager )
{
UserManager = userManager;
SignInManager = signInManager;
RoleManager = roleManager;
}
Once you are done with this you can fetch list of all roles by using
var roles = RoleManager.Roles;
You can use this as per your requirement.