我正在尝试将 ASP.net core 搭建的注册页面移至控制器，以便我可以更好地控制打开它的方式以及出于组织原因。视图之前所在的位置
地区
现在，我希望它位于
浏览量 -账户
我想使用 AccountController 打开此视图。
我尝试打开它；启动模型；调用一些方法，就像这样：
[HttpGet]
public async Task<IActionResult> RegisterAsync()
{
var model = new RegisterModel(_userManager, _userStore, _signInManager, _logger, _emailSender);
model.OnGetAsync("Home/Index").Wait() ;
return View("Register", model);
}
每次我在控制器上调用操作时，我都会在视图本身中收到一个异常，即模型为空。
我该怎么办？
当您尝试使用 MVC 时，您的视图模型不需要这些服务，这里是一个小示例：
型号：
public class InputModel
{
[Required]
[EmailAddress]
[Display(Name = "Email")]
public string? Email { get; set; }
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string? Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Confirm password")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string? ConfirmPassword { get; set; }
}
public class RegisterViewModel
{
public InputModel Input { get; set; } = default!;
public string? ReturnUrl { get; set; }
public IList<AuthenticationScheme>? ExternalLogins { get; set; }
}
查看：
@model RegisterViewModel
<div class="row">
<div class="col-md-4">
<form id="registerForm" asp-route-returnUrl="@Model?.ReturnUrl" method="post">
<h2>Create a new account.</h2>
<hr />
<div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
<div class="form-floating mb-3">
<input asp-for="Input.Email" class="form-control" autocomplete="username" aria-required="true" placeholder="[email protected]" />
<label asp-for="Input.Email">Email</label>
<span asp-validation-for="Input.Email" class="text-danger"></span>
</div>
<div class="form-floating mb-3">
<input asp-for="Input.Password" class="form-control" autocomplete="new-password" aria-required="true" placeholder="password" />
<label asp-for="Input.Password">Password</label>
<span asp-validation-for="Input.Password" class="text-danger"></span>
</div>
<div class="form-floating mb-3">
<input asp-for="Input.ConfirmPassword" class="form-control" autocomplete="new-password" aria-required="true" placeholder="password" />
<label asp-for="Input.ConfirmPassword">Confirm Password</label>
<span asp-validation-for="Input.ConfirmPassword" class="text-danger"></span>
</div>
<button id="registerSubmit" type="submit" class="w-100 btn btn-lg btn-primary">Register</button>
</form>
</div>
<div class="col-md-6 col-md-offset-2">
<section>
<h3>Use another service to register.</h3>
<hr />
@{
if ((Model?.ExternalLogins?.Count ?? 0) == 0)
{
<div>
<p>
There are no external authentication services configured. See this <a href="https://go.microsoft.com/fwlink/?LinkID=532715">
article
about setting up this ASP.NET application to support logging in via external services
</a>.
</p>
</div>
}
else
{
<form id="external-account" asp-action="./ExternalLogin" asp-route-returnUrl="@Model.ReturnUrl" method="post" class="form-horizontal">
<div>
<p>
@foreach (var provider in Model.ExternalLogins!)
{
<button type="submit" class="btn btn-primary" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.DisplayName</button>
}
</p>
</div>
</form>
}
}
</section>
</div>
</div>
@section Scripts {
<partial name="_ValidationScriptsPartial" />
}
控制器：
public class AccountController : Controller
{
private readonly SignInManager<AppUser> _signInManager;
private readonly UserManager<AppUser> _userManager;
private readonly IUserStore<AppUser> _userStore;
private readonly IUserEmailStore<AppUser> _emailStore;
private readonly IEmailSender _emailSender;
public AccountController
(
UserManager<AppUser> userManager,
IUserStore<AppUser> userStore,
SignInManager<AppUser> signInManager,
IEmailSender emailSender
)
{
_userManager = userManager;
_userStore = userStore;
_emailStore = GetEmailStore();
_signInManager = signInManager;
_emailSender = emailSender;
}
[HttpGet]
public async Task<IActionResult> Register(string returnUrl = null)
{
var registermodel = new RegisterViewModel {
ReturnUrl = returnUrl,
ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList()
};
return View(registermodel);
}
[HttpPost]
public async Task<IActionResult> Register(RegisterViewModel registerViewModel)
{
registerViewModel.ReturnUrl ??= Url.Content("~/");
registerViewModel.ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
if (ModelState.IsValid)
{
var user = CreateUser();
await _userStore.SetUserNameAsync(user, registerViewModel.Input.Email, CancellationToken.None);
await _emailStore.SetEmailAsync(user, registerViewModel.Input.Email, CancellationToken.None);
var result = await _userManager.CreateAsync(user, registerViewModel.Input.Password);
if (result.Succeeded)
{
var userId = await _userManager.GetUserIdAsync(user);
var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
var callbackUrl = Url.Page(
"/Account/ConfirmEmail",
pageHandler: null,
values: new { area = "Identity", userId = userId, code = code, returnUrl = registerViewModel.ReturnUrl },
protocol: Request.Scheme);
await _emailSender.SendEmailAsync(registerViewModel.Input.Email, "Confirm your email",
$"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
if (_userManager.Options.SignIn.RequireConfirmedAccount)
{
return RedirectToAction("RegisterConfirmation", new { email = registerViewModel.Input.Email, returnUrl = registerViewModel.ReturnUrl });
}
else
{
await _signInManager.SignInAsync(user, isPersistent: false);
return LocalRedirect(registerViewModel.ReturnUrl);
}
}
foreach (var error in result.Errors)
{
ModelState.AddModelError(string.Empty, error.Description);
}
}
return View(registerViewModel);
}
public IActionResult RegisterConfirmation()
{
//migrate from razor page to MVC yourself
return Ok("Ok");
}
private AppUser CreateUser()
{
try
{
return Activator.CreateInstance<AppUser>();
}
catch
{
throw new InvalidOperationException($"Can't create an instance of '{nameof(AppUser)}'. " +
$"Ensure that '{nameof(AppUser)}' is not an abstract class and has a parameterless constructor, or alternatively " +
$"override the register page in /Areas/Identity/Pages/Account/Register.cshtml");
}
}
private IUserEmailStore<AppUser> GetEmailStore()
{
if (!_userManager.SupportsUserEmail)
{
throw new NotSupportedException("The default UI requires a user store with email support.");
}
return (IUserEmailStore<AppUser>)_userStore;
}
}