在身份asp mvc中找到用户角色

1 回答

• 5

  user.Roles 将获取用户所属的角色列表 . 根据您的要求，您可以执行以下操作

  [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);
      }
  }
  

  根据我们的讨论，如果您想从数据库中获取所有角色，您需要在下面进行操作

  将 ApplicationRoleManager 类添加到IdentityConfig.cs，如下所示

  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;
      } 
  }
  

  将RoleManager分配给Owin Context，因此请在starup.auth.cs下面添加

  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
  }
  

  在AccountController.cs中添加一个属性

  private ApplicationRoleManager _roleManager;
  
      public ApplicationRoleManager RoleManager
      {
          get
          {
              return _roleManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationRoleManager>();
          }
          private set
          {
              _roleManager = value;
          }
      }
  

  在构造函数中传递它

  public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager,ApplicationRoleManager roleManager )
      {
          UserManager = userManager;
          SignInManager = signInManager;
          RoleManager = roleManager;
      }
  

  完成此操作后，您可以使用var roles = RoleManager.Roles获取所有角色的列表;

  您可以根据您的要求使用它 .

  回复于 2024-05-11T15:27:02+08:00