Sto cercando di implementare ruoli utente nella mia applicazione Web MVC. Tuttavia sto ricevendo un'eccezione nulla sulla linea return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
nel mio controller account.MVC5 Account Controller null riferimento eccezione
account controller
[Authorize]
public class AccountController : Controller
{
private ApplicationSignInManager _signInManager;
private ApplicationUserManager _userManager;
private ApplicationRoleManager _roleManager;
public AccountController(){}
public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager, ApplicationRoleManager roleManager)
{ UserManager = userManager;
SignInManager = signInManager;
RoleManager = roleManager; }
public ApplicationRoleManager RoleManager
{
get { return _roleManager ?? HttpContext.GetOwinContext().Get<ApplicationRoleManager>(); }
private set { _roleManager = value; }
}
public ApplicationSignInManager SignInManager
{
get { return _signInManager ?? HttpContext.GetOwinContext().Get<ApplicationSignInManager>(); }
private set { _signInManager = value; }
}
public ApplicationUserManager UserManager
{
get { return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>(); }
private set {_userManager = value; }
}
ActionResult che attiverà l'aggiunta degli utenti al ruolo.
[System.Web.Mvc.HttpPost]
[ValidateAntiForgeryToken]
public ActionResult RoleAddToUser(string UserName, string RoleName)
{
ApplicationUser user = context.Users.FirstOrDefault(u => u.UserName.Equals(UserName, StringComparison.CurrentCultureIgnoreCase));
var account = new AccountController();
if (user != null) account.UserManager.AddToRole(user.Id, RoleName);
var list = context.Roles.OrderBy(r => r.Name).ToList().Select(rr => new SelectListItem { Value = rr.Name.ToString(), Text = rr.Name }).ToList();
ViewBag.Roles = list;
return View("ManageUserRoles");
}
Startup.Auth contiene
app.CreatePerOwinContext(ApplicationDbContext.Create);
app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
Identity Config
// Configure the application sign-in manager which is used in this application.
public class ApplicationSignInManager : SignInManager<ApplicationUser, string>
{
public ApplicationSignInManager(ApplicationUserManager userManager, IAuthenticationManager authenticationManager)
: base(userManager, authenticationManager)
{
}
public override Task<ClaimsIdentity> CreateUserIdentityAsync(ApplicationUser user)
{ return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager); }
public static ApplicationSignInManager Create(IdentityFactoryOptions<ApplicationSignInManager> options, IOwinContext context)
{ return new ApplicationSignInManager(context.GetUserManager<ApplicationUserManager>(), context.Authentication); }
}
public class ApplicationRoleManager : RoleManager<IdentityRole>
{
public ApplicationRoleManager(IRoleStore<IdentityRole, string> roleStore)
: base(roleStore) { }
public static ApplicationRoleManager Create(IdentityFactoryOptions<ApplicationRoleManager> options, IOwinContext context)
{
return new ApplicationRoleManager(new RoleStore<IdentityRole>(context.Get<ApplicationDbContext>()));
}
}
Quando è il riferimento null provenienti da? Nel codice sto verificando due volte che l'utente esiste.
Grazie
Dio è stato anche così semplice. Grazie mille! – electrometro
Anche questo mi ha preso. È andato alla fantasia e ha creato un controller di base per passare le funzioni universali in altri luoghi in cui ho bisogno. Pensiero brillante! – Dreamcasting
Grazie mille Scarpa –