Question

任何人都知道为什么UserManager.Create(user, password);可能会抛出EntityValidationError，说Id是必需的。

它可能与我的UserManager有关。设置如下：

public class MyAppDb : IdentityDbContext<ApplicationUser, ApplicationRole, string, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
{
    public static MyAppDb Create()
    {
        return new MyAppDb();
    }

    public MyAppDb()
        : base("MyAppDb")
    {
    }
}


public class ApplicationUserStore : UserStore<ApplicationUser, ApplicationRole, string, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
{
    public ApplicationUserStore(MyAppDb context)
        : base(context)
    {
    }
}

public class ApplicationUserManager : UserManager<ApplicationUser, string>
{
    public ApplicationUserManager(IUserStore<ApplicationUser, string> store)
        : base(store)
    {
    }
}

在这样的控制器中：

public class AccountController : Controller
{
    public AccountController()
        : this(new ApplicationUserManager(new ApplicationUserStore(new MyAppDb())))
    {
    }

    public AccountController(ApplicationUserManager userManager)
    {
        UserManager = userManager;
        UserManager.PasswordValidator = (IIdentityValidator<string>)new MinimumLengthValidator(8);
        UserManager.UserValidator = new UserValidator<ApplicationUser>(UserManager) { AllowOnlyAlphanumericUserNames = false, RequireUniqueEmail = true };
    }

    public ApplicationUserManager UserManager { get; private set; }

    ...
}

ApplicationUser，ApplicationRole，ApplicationUserLogin，ApplicationUserRole和ApplicationUserClaim都分别从Identity类继承。

有人看错了吗？在创建所有自定义Identity类之前，我能够注册用户（UserManager.Create())而没有Id问题。

更新：似乎为密钥指定string已破坏数据库上下文中自动生成的密钥。这是我最好的猜测。它现在正在寻找我设置Id。我不想这样做，我希望它能够像我在User上创建自定义字段之前那样工作。

Answer 1

似乎指定string告诉UserStore您将提供Id。当我解决了以下问题Is there a way to create a custom User and Role without specifying the TKey on IdenitityUser, IdentityRole, and IdentityDbContext?

时，这个问题就消失了

-OR -

只需给它id这样：Guid.NewGuid().ToString()

Answer 2

您可以尝试的另一件事是在ApplicationUser的无参数构造函数中添加id：

public class ApplicationUser :  IdentityUser<string, IdentityUserLogin, ApplicationUserRole, IdentityUserClaim>, IUser
{
    public ApplicationUser()
        : base()
    {
        this.Id = Guid.NewGuid().ToString();
    }
...

Answer 3

方法Create（）需要ID。

我刚刚继承了IdentityUser：

public class ApplicationUser : IdentityUser
{
  // Rest of your implmentation...
}

当我创建ApplicationUser的新实例时，它将包含ID。

public static ApplicationUser GetUser(this UserViewModel model)
    {
        var applicationUser = new ApplicationUser
        {
            DisplayName = model.DisplayName,
            Email = model.Email,
            EmailConfirmed = model.EmailConfirmed,
            UserName = model.UserName,
            Description = model.Description,
            LastSignOn = model.LastSignOn
        };

        return applicationUser;
    }

GetUser（）方法将转换没有ID ApplicationUser且带有填充ID的UserViewModel。

UserManager.Create（用户，密码）thowing EntityValidationError说Id是必需的？

3 个答案: