asp.net-core - 为用户分配角色
问题描述
我在为用户分配角色时遇到问题。我正在使用 .net Core 2.1
我更改了注册方法。在注册期间,我将“管理员”角色分配给正在创建的用户。
public async Task<IActionResult> OnPostAsync(string returnUrl = null)
{
returnUrl = returnUrl ?? Url.Content("~/");
if (ModelState.IsValid)
{
var db = new ApplicationDbContext(_optionsBuilder.Options);
var email = db.Users.Where(s => s.Email == Input.Email);
if (email.Count() != 0)
{
ViewData["duplicateEmail"] = "Email is already taken";
return Page();
}
var user = new IdentityUser { UserName = Input.UserName, Email = Input.Email };
var result = await _userManager.CreateAsync(user, Input.Password);
if (result.Succeeded)
{
_logger.LogInformation("User created a new account with password.");
var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
var callbackUrl = Url.Page(
"/Account/ConfirmEmail",
pageHandler: null,
values: new { userId = user.Id, code = code },
protocol: Request.Scheme);
await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
$"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
//#############
if(!await _roleManager.RoleExistsAsync("Admin"))
{
await _userManager.AddToRoleAsync(user, "Admin");
}
//################
await _signInManager.SignInAsync(user, isPersistent: false);
return LocalRedirect(returnUrl);
}
foreach (var error in result.Errors)
{
ModelState.AddModelError(string.Empty, error.Description);
}
}
// If we got this far, something failed, redisplay form
return Page();
}
}
我只在标签之间添加了代码。
启动应用程序后,当我点击注册时,我看到
我试图添加
services.AddIdentity<IdentityUser,IdentityRole>()
.AddDefaultUI()
.AddEntityFrameworkStores<ApplicationDbContext>();
至
startup
但它不起作用。
我怎么做错了?
解决方案
您需要注入RoleManager<IdentityRole>
RegisterModel ,例如:
public class RegisterModel : PageModel
{
private readonly RoleManager<IdentityRole> _roleManager;
private readonly SignInManager<IdentityUser> _signInManager;
private readonly UserManager<IdentityUser> _userManager;
private readonly ILogger<RegisterModel> _logger;
private readonly IEmailSender _emailSender;
public RegisterModel(
RoleManager<IdentityRole> roleManager,
UserManager<IdentityUser> userManager,
SignInManager<IdentityUser> signInManager,
ILogger<RegisterModel> logger,
IEmailSender emailSender)
{
_roleManager = roleManager;
_userManager = userManager;
_signInManager = signInManager;
_logger = logger;
_emailSender = emailSender;
}
然后尝试添加AddRoleManager
到您的 configureServices 中,例如:
services.AddIdentity<IdentityUser, IdentityRole>()
.AddRoleManager<RoleManager<IdentityRole>>()
.AddDefaultUI()
.AddDefaultTokenProviders()
.AddEntityFrameworkStores<ApplicationDbContext>();
推荐阅读
- php - 如何在 laravel 5.8 中用一个后端和多个前端构建项目?
- python - 如何在不影响全局后端的情况下临时(本地)更改 Jupyter 笔记本中的函数的 Matplotlib 后端?
- cat - 连接具有特定 ID 的文件
- android - 持久通知android
- powershell - Powershell:提取部分文件名以创建文件夹并将文件移动到文件夹中
- python - Heroku:部署文件 IO 操作期间的 FileNotFoundError [Errno 2] - Python
- sql - SQL:如何使用窗口函数更新来自特定选择的列值(东西,密集排名,结束)
- spring-boot - 新角色的 Spring Data JPA 的 @Query 中的 Spring Security SpEL 错误:未绑定序数参数:3
- python - 在 Pandas Python 中读取 CSV 文件
- https - 如果根证书过期会怎样?