在ASP.NET MVC中获取经过身份验证的身份用户数据 [英] Get Authenticated Identity User data in ASP.NET MVC
问题描述
我已经创建了一个ASP.NET身份实体框架,并在ASP.NET身份-MVC中添加了用于注册和登录功能的客户字段
I Have created an ASP.NET Identity Entity Framework, and added a customer fields for Registration and Login funtions in ASP.NET Identity - MVC
identityModel.cs
identityModel.cs
public class ApplicationUser : IdentityUser
{
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
{
// Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
// Add custom user claims here
return userIdentity;
}
//add custom fields
public string FirstName { get; set; }
public string LastName { get; set; }
public bool IsAdministrator { get; set; }
}
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
: base("DefaultConnection", throwIfV1Schema: false)
{
}
public DbSet<Property> Property { get; set; }
public static ApplicationDbContext Create()
{
return new ApplicationDbContext();
}
}
在另一个名为Property的类中(通过登录和身份验证之后)
In another class called Property (after login and authentication passed)
我想调用AspNetUsers表中的一个字段,它是当前登录的。我想检查IsAdministrator字段及其值,并根据该值对要查看的内容做一些条件。
I want to call on the one field in AspNetUsers table, which is the currently logged in. I want to check the IsAdministrator field and its values and do some conditions on what to view based on that value.
这是我所做的,但没有成功
this is what I have done, but not successful
public class PropertyController : Controller
{
private ApplicationDbContext db = new ApplicationDbContext();
// GET: Property
[Authorize]
public async Task<ActionResult> Index()
{
var user = System.Web.HttpContext.Current.User.Identity.GetUserId();
bool admin = db.Users.SingleOrDefault(y => y.Id.Equals("user")).IsAdministrator;
//return View(await db.Property.ToListAsync());
if (admin == true){
return View(await db.Property.Where(x => x.PropertyID == 1).ToListAsync()); }
else {
return View(await db.Property.ToListAsync());}
}
我能够提取当前登录用户的UserID,但是我想要用户的另一个字段或信息是IsAdmin字段,该字段为1或0。
I was able to extract the UserID of the currently logged-in user, but i want the another field or information from the user which is the IsAdmin field which is either 1 OR 0.
我该如何实现?
这不起作用
bool admin = db.Users.SingleOrDefault(y => y.Id.Equals("user")).IsAdministrator;
错误
推荐答案
表达式 SingleOrDefault(y => y.Id.Equals( user))
没有任何意义。它将使用 Id = user
的用户搜索数据库,却一无所获。这就是为什么它返回null导致 NullReferenceException
的原因。
The expression SingleOrDefault(y => y.Id.Equals("user"))
does not make any sense. It's going to search database a user with Id = "user"
and finds nothing. That's why it returns null which causes the NullReferenceException
.
尝试使用以下代码段
...
var userId = System.Web.HttpContext.Current.User.Identity.GetUserName();
var user = UserManager.FindByNameAsync(userId);
var isAdmin = user.IsAdministrator;
...
获取用户
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