扩展UserManager

Question

在我的.NET Core2.0MVC项目中，我添加了额外的值来扩展ApplicationUser

public class ApplicationUser : IdentityUser
    {
        public string Name { get; set; }
        public DateTime DateCreated { get; set; }
        public DateTime DateUpdated { get; set; }
        public DateTime LastLogin{ get; set; }

    }

在_LoginPartial中，我想要获取名称，而不是它默认获取的UserName

@using Microsoft.AspNetCore.Identity
@using RioTintoQRManager.Models

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager
@if (SignInManager.IsSignedIn(User))
{
     @UserManager.GetUserName(User)
}

如何扩展UserManager，或者创建一个像UserManager.GetUserName一样在视图中可用的新方法？

Answer 1

视图本身不需要调用后端服务，应该通过@Model或ViewBag/ViewData/Session.为其提供所需的所有信息

但是，如果需要获取当前用户，只需使用：

var user = await UserManager.GetUserAsync(User);
string userName = user.Name;

但是，如果你想拥有自己的UserManager，你必须这样做：

public class MyManager : UserManager<ApplicationUser>
{
    public MyManager(IUserStore<ApplicationUser> store, IOptions<IdentityOptions> optionsAccessor, IPasswordHasher<ApplicationUser> passwordHasher, IEnumerable<IUserValidator<ApplicationUser>> userValidators, IEnumerable<IPasswordValidator<ApplicationUser>> passwordValidators, ILookupNormalizer keyNormalizer, IdentityErrorDescriber errors, IServiceProvider services, ILogger<UserManager<ApplicationUser>> logger) : base(store, optionsAccessor, passwordHasher, userValidators, passwordValidators, keyNormalizer, errors, services, logger)
    {

    }

    public async Task<string> GetNameAsync(ClaimsPrincipal principal)
    {
        var user = await GetUserAsync(principal);
        return user.Name;
    }
}

并将其添加到服务中：

services.AddIdentity<ApplicationUser, ApplicationRole>()
    .AddEntityFrameworkStores<SomeContext>()
    .AddUserManager<MyManager>()
    .AddDefaultTokenProviders();

然后您需要为MyManager替换对UserManager<ApplicationUser>的引用。

Answer 2

多亏了@Camilo-Terevinto，我才能找到解决方案。在我的_Layout.cshtml

<span class="m-topbar__username rust-text">
   @{ var u = await UserManager.GetUserAsync(User); }
   @u.Name
 </span>