在身份标识asp中找到用户角色mvc

Question

我正在使用此代码进行登录。如何在用户登录时查找用户角色？

[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将提取用户所属的角色列表。根据您的需要，你可以这样做下面根据我们的讨论

[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); 
    } 
} 

，如果你想获取所有从数据库中你需要做以下

角色如下ApplicationRoleManager类添加到您的IdentityConfig.cs

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; 
    } 
} 

分配RoleManager到Owin语境，所以下面添加到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 
} 

在AccountController.cs添加属性

private ApplicationRoleManager _roleManager; 

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

传递给它的构造

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

一旦你这个做，你可以通过使用 VAR角色= RoleManager.Roles获取所有的角色列表;

您可以根据您的要求使用它。