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c# - 使用额外属性更新 AspNetUser 将不起作用

问题描述

晚上好。我被困在我似乎无法修复的事情上。我在我的项目中创建了一个名为 Address.cshtml.cs（模型）和 Address.cshtml（视图）的剃须刀页面，以便用户能够在注册后添加他们的用户信息。而且var result = await _userManager.UpdateAsync(user);似乎不起作用。我尝试了两种方法在数据库中更新它：

第一次尝试

  [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> AccountChange(UserModel model)
        {
            if (ModelState.IsValid)
            {

                // Get the current application user
                var user = await _userManager.GetUserAsync(User);

                //Update the details
                user.name = model.name;
                user.surname = model.surname;
                user.street = model.street;
                user.streetnumber = model.streetnumber;
                user.city = model.city;
                user.zipcode = model.zipcode;

                // Update user address
                var result = await _userManager.UpdateAsync(user);
            }


            //await _signInManager.RefreshSignInAsync(User);
            _logger.LogInformation("User added their address information successfully.");
            StatusMessage = "Your address information has been added.";

            return RedirectToPage();

        }
    }

第二次尝试

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Edit(UserModel model)
{
    if (ModelState.IsValid)
    {
        UserModel u = await _userManager.FindByIdAsync(model.Id);
        u.name = model.name;
        u.surname = model.surname;
        u.street = model.street;
        u.streetnumber = model.streetnumber;
        u.city = model.city;
        u.zipcode = model.zipcode;
        await _userManager.UpdateAsync(u);
        return RedirectToAction("Index");
    }
    return RedirectToPage();
}

我怎样才能解决这个问题？我在下面添加了所有必要的代码。

地址.cshtml.cs

namespace bytme.Areas.Identity.Pages.Account.Manage
{
    public class AddressModel : PageModel
    {
        private readonly UserManager<UserModel> _userManager;
        private readonly SignInManager<UserModel> _signInManager;
        private readonly ILogger<AddressModel> _logger;

        public AddressModel(
            UserManager<UserModel> userManager,
            SignInManager<UserModel> signInManager,
            ILogger<AddressModel> logger)
        {
            _userManager = userManager;
            _signInManager = signInManager;
            _logger = logger;
        }

        [BindProperty]
        public InputModel Input { get; set; }

        public string ReturnUrl { get; set; }

        [TempData]
        public string StatusMessage { get; set; }

        public class InputModel
        {
            [Required]
            [DataType(DataType.Text)]
            [Display(Name = "Name")]
            [StringLength(100, ErrorMessage = "Invalid input. Maximum is 100 characters.")]
            public string name { get; set; }

            [Required]
            [DataType(DataType.Text)]
            [Display(Name = "Surname")]
            [StringLength(100, ErrorMessage = "Invalid input. Maximum is 100 characters.")]
            public string surname { get; set; }

            [Required]
            [DataType(DataType.Text)]
            [Display(Name = "Street")]
            [StringLength(48, ErrorMessage = "The longest street name in the Netherlands is 48 characters.")]
            public string street { get; set; }

            [Required]
            [DataType(DataType.Text)]
            [Display(Name = "House Number")]
            [StringLength(5, ErrorMessage = "The longest house number in the Netherlands is 5 characters.")]
            public string streetnumber { get; set; }

            //[DataType(DataType.Text)]
            //[Display(Name = "House Number Addition", Description = "For example A or II")]
            //[StringLength(6, ErrorMessage = "
            //public string streetnumberadd { get; set; }

            [Required]
            [DataType(DataType.Text)]
            [Display(Name = "City")]
            [StringLength(28, ErrorMessage = "The longest place name in the Netherlands is 28 characters.")]
            public string city { get; set; }

            [Required]
            [DataType(DataType.PostalCode)]
            [Display(Name = "Postal Code")]
            [RegularExpression(@"^[1-9][0-9]{3}\s?[a-zA-Z]{2}$", ErrorMessage = "Invalid zip, for example: 1234AB")]
            public string zipcode { get; set; }
        }

        public void OnGet(string returnUrl = null)
        {
            ReturnUrl = returnUrl;
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> AccountChange(UserModel model)
        {
            if (ModelState.IsValid)
            {

                // Get the current application user
                var user = await _userManager.GetUserAsync(User);

                //Update the details
                user.name = model.name;
                user.surname = model.surname;
                user.street = model.street;
                user.streetnumber = model.streetnumber;
                user.city = model.city;
                user.zipcode = model.zipcode;

                // Update user address
                var result = await _userManager.UpdateAsync(user);
            }


            //await _signInManager.RefreshSignInAsync(User);
            _logger.LogInformation("User added their address information successfully.");
            StatusMessage = "Your address information has been added.";

            return RedirectToPage();

        }
    }
}

地址.cshtml

@page
@model AddressModel
@inject SignInManager<UserModel> SignInManager
@using Microsoft.AspNetCore.Identity
@using bytme.Models;
@{
    ViewData["Title"] = "Add Address Information";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@Html.Partial("_StatusMessage", Model.StatusMessage)
@{
    var hasExternalLogins = (await SignInManager.GetExternalAuthenticationSchemesAsync()).Any();
}
<div>
    <h3>Change your account settings</h3>
    <hr />
    <div class="row">
        <div class="col-md-3">
            <partial name="_ManageNav" />
        </div>
        <div class="col-md-9">
            <div class="row">
                <div class="col-md-6">
                    <h4>@ViewData["Title"]</h4>
                    <form id="change-password-form" method="post">
                        <div asp-validation-summary="All" class="text-danger"></div>
                        <div class="form-group">
                            <label asp-for="Input.name"></label>
                            <input asp-for="Input.name" class="form-control" />
                            <span asp-validation-for="Input.name" class="text-danger"></span>
                        </div>
                        <div class="form-group">
                            <label asp-for="Input.surname"></label>
                            <input asp-for="Input.surname" class="form-control" />
                            <span asp-validation-for="Input.surname" class="text-danger"></span>
                        </div>
                        <div class="form-group">
                            <label asp-for="Input.street"></label>
                            <input asp-for="Input.street" class="form-control" />
                            <span asp-validation-for="Input.street" class="text-danger"></span>
                        </div>
                        <div class="form-group">
                            <label asp-for="Input.streetnumber"></label>
                            <input asp-for="Input.streetnumber" class="form-control" />
                            <span asp-validation-for="Input.streetnumber" class="text-danger"></span>
                        </div>
                        <div class="form-group">
                            <label asp-for="Input.city"></label>
                            <input asp-for="Input.city" class="form-control" />
                            <span asp-validation-for="Input.city" class="text-danger"></span>
                        </div>
                        <div class="form-group">
                            <label asp-for="Input.zipcode"></label>
                            <input asp-for="Input.zipcode" class="form-control" />
                            <span asp-validation-for="Input.zipcode" class="text-danger"></span>
                        </div>
                        <button type="submit" class="btn btn-default">Submit</button>
                    </form>
                </div>
            </div>

        </div>
    </div>
</div>

@section Scripts {
    <partial name="_ValidationScriptsPartial" />
}

用户模型.cs

namespace bytme.Models
{
    public class UserModel : IdentityUser
    {
        public override string Id { get; set; }
        public override string Email { get; set; }
        public override string UserName { get; set; }
        public override string PasswordHash { get; set; }
        public string zipcode { get; set; }
        public string city { get; set; }
        public string street { get; set; }
        public string streetnumber { get; set; }
        public string name { get; set; }
        public string surname { get; set; }
    }
}

ApplicationDbContext.cs

namespace bytme.Data
{
    public class ApplicationDbContext : IdentityDbContext<UserModel>
    {
        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
            : base(options)
        {
        }
        protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);
            // Customize the ASP.NET Identity model and override the defaults if needed.
            // For example, you can rename the ASP.NET Identity table names and more.
            // Add your customizations after calling base.OnModelCreating(builder);
        }

        public DbSet<bytme.Models.Item> Items { get; set; }
        public DbSet<bytme.Models.ItemCategories> ItemCategories { get; set; }
        public DbSet<bytme.Models.UserModel> UserModels { get; set; }
        public DbSet<bytme.Models.OrderHistory> OrderHistories { get; set; }
        public DbSet<bytme.Models.OrderMain> OrderMains { get; set; }
        public DbSet<bytme.Models.OrderStatus> OrderStatuses { get; set; }
        public DbSet<bytme.Models.WishlistModel> WishlistModels { get; set; }
        public DbSet<bytme.Models.ShoppingCartModel> ShoppingCartModels { get; set; }
    }
}

标签： c#asp.netasp.net-mvcrazormodel-view-controller

解决方案

检查代码后，我发现了几个问题。

1.我对你的发帖方式有疑问AccountChange。应遵循以下约定。根据 Microsoft docs about razor pages，生成了几个默认方法处理程序，例如：OnGet OnPost OnGetAsync OnPostAsync等。

但是，如果您想使用自定义处理程序名称，它也必须遵循一些命名约定。

方法应以 OnPost[Get,...]<Handlername>[Async|NoAsync](its optional).

所以你的方法应该被命名为OnPostAccountChangeAsync()

如果你定义了这样一个方法，你必须告诉一个视图，你想使用指定的处理程序。你用指令告诉它asp-page-handler，所以你的表单应该是这样的：

<form id="change-password-form" method="post">
   //...
   <button type="submit" class="btn btn-default" asp-page-handler="AccountChange">Submit</button>
</form>


2.您正在绑定您的财产Input

[BindProperty]
public InputModel Input { get; set; }

但是，在您的方法OnPostAccountChangeAsync()中，您尝试访问 type 的参数实例UserModel，该实例将为 null。它没有绑定。在好的情况下，您将得到一个空异常。在糟糕的情况下，您将使用空属性更新您的实体。所以你的方法OnPostAccountChangeAsync()应该接受参数实例，InputModel或者你可以直接在方法体内访问这个属性（你可以去掉参数）

OnPostAccountChangeAsync(InputModel Input)
{
 //...
}


3.它的小事，但是，它提高了你的代码的可读性。请在命名变量时保持一致。一致性使您的代码有更好的方向性。在 Csharp 中，属性应该以大写字母(PascalCasing)开头。不要犹豫，检查C# 命名约定

对于您在评论部分关于 UserManager 的问题：
您可以将Identity其视为 wrapper (而不是说 api)，它为用户管理提供了有用的方法，此外它还提供了其他东西。正如我所说，如果你查看你的包依赖，你可以发现它Entity Framework是在Identitynuget 包中发货的。这是什么意思？它让你有可能不仅仅依赖于一些“神秘的” Identity。您可以清楚地使用Entity Framework例如将新用户保存到表 AspNetUsers 中。明确地说，你不受限制。但是，如果您已经使用 Identity，最好使用它的可用方法。

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