问题描述
我有一个基本问题。我想自定义 IdentityResult
添加到 ModelState
的错误。
这是我的代码(foreach
中的 else
添加错误):
var user = new IdentityUser {UserName = Input.Phone,PhoneNumber = Input.Phone};
var result = await _userManager.CreateAsync(user,Input.Password);
if (result.Succeeded)
{
//Do something...
}
else
{
foreach (var error in result.Errors)
{
//how can I change error.Description?
ModelState.AddModelError(string.Empty,error.Description);
}
}
解决方法
您可以覆盖 IdentityErrorDescriber
的方法来更改身份错误消息。
public class YourIdentityErrorDescriber : IdentityErrorDescriber
{
public override IdentityError DuplicateUserName(string username)
{
return new IdentityError
{
Code = nameof(DuplicateUserName),Description = "This is a error"
};
//other method in IdentityErrorDescriber,you can see below
}
}
然后您可以在startup
(.AddErrorDescriber<YourIdentityErrorDescriber>();
)中注册它。
services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = false)
.AddEntityFrameworkStores<ApplicationDbContext>().AddErrorDescriber<YourIdentityErrorDescriber>();
关于IdentityErrorDescriber
中的方法。
public class CustomIdentityErrorDescriber : IdentityErrorDescriber
{
public override IdentityError DefaultError() { return new IdentityError { Code = nameof(DefaultError),Description = $"An unknown failure has occurred." }; }
public override IdentityError ConcurrencyFailure() { return new IdentityError { Code = nameof(ConcurrencyFailure),Description = "Optimistic concurrency failure,object has been modified." }; }
public override IdentityError PasswordMismatch() { return new IdentityError { Code = nameof(PasswordMismatch),Description = "Incorrect password." }; }
public override IdentityError InvalidToken() { return new IdentityError { Code = nameof(InvalidToken),Description = "Invalid token." }; }
public override IdentityError LoginAlreadyAssociated() { return new IdentityError { Code = nameof(LoginAlreadyAssociated),Description = "A user with this login already exists." }; }
public override IdentityError InvalidUserName(string userName) { return new IdentityError { Code = nameof(InvalidUserName),Description = $"User name '{userName}' is invalid,can only contain letters or digits." }; }
public override IdentityError InvalidEmail(string email) { return new IdentityError { Code = nameof(InvalidEmail),Description = $"Email '{email}' is invalid." }; }
public override IdentityError DuplicateUserName(string userName) { return new IdentityError { Code = nameof(DuplicateUserName),Description = $"User Name '{userName}' is already taken." }; }
public override IdentityError DuplicateEmail(string email) { return new IdentityError { Code = nameof(DuplicateEmail),Description = $"Email '{email}' is already taken." }; }
public override IdentityError InvalidRoleName(string role) { return new IdentityError { Code = nameof(InvalidRoleName),Description = $"Role name '{role}' is invalid." }; }
public override IdentityError DuplicateRoleName(string role) { return new IdentityError { Code = nameof(DuplicateRoleName),Description = $"Role name '{role}' is already taken." }; }
public override IdentityError UserAlreadyHasPassword() { return new IdentityError { Code = nameof(UserAlreadyHasPassword),Description = "User already has a password set." }; }
public override IdentityError UserLockoutNotEnabled() { return new IdentityError { Code = nameof(UserLockoutNotEnabled),Description = "Lockout is not enabled for this user." }; }
public override IdentityError UserAlreadyInRole(string role) { return new IdentityError { Code = nameof(UserAlreadyInRole),Description = $"User already in role '{role}'." }; }
public override IdentityError UserNotInRole(string role) { return new IdentityError { Code = nameof(UserNotInRole),Description = $"User is not in role '{role}'." }; }
public override IdentityError PasswordTooShort(int length) { return new IdentityError { Code = nameof(PasswordTooShort),Description = $"Passwords must be at least {length} characters." }; }
public override IdentityError PasswordRequiresNonAlphanumeric() { return new IdentityError { Code = nameof(PasswordRequiresNonAlphanumeric),Description = "Passwords must have at least one non alphanumeric character." }; }
public override IdentityError PasswordRequiresDigit() { return new IdentityError { Code = nameof(PasswordRequiresDigit),Description = "Passwords must have at least one digit ('0'-'9')." }; }
public override IdentityError PasswordRequiresLower() { return new IdentityError { Code = nameof(PasswordRequiresLower),Description = "Passwords must have at least one lowercase ('a'-'z')." }; }
public override IdentityError PasswordRequiresUpper() { return new IdentityError { Code = nameof(PasswordRequiresUpper),Description = "Passwords must have at least one uppercase ('A'-'Z')." }; }
}
测试结果:
参考此answer。