ASP.NET標識 - 未調用自定義角色驗證

Question

我正在嘗試創建一個自定義RoleValidator對象來驗證我的自定義IdentityRole 。 我已經創建了一個ApplicaitonRoleValidator從繼承類RoleValidator並將此作為RoleValidator我ApplicationRoleManager類。 但是當我創建新角色時，永遠不會調用驗證函數ValidateAsync 。

我試過看類似的問題實現UserValidator 如何自定義Asp.net Identity 2用戶名已經采取驗證消息？ 而這一個ASP.NET身份 - 設置UserValidator什么都不做，但無法讓它工作。

/// <summary>
/// Custom role validator, used to validate new instances of ApplicationRole that are added to the system.
/// </summary>
/// <typeparam name="TRole">The type of the role.</typeparam>
public class ApplicationRoleValidator<TRole> : RoleValidator<TRole> where TRole : ApplicationRole
{
    private RoleManager<TRole, string> Manager { get; set; }

    /// <summary>
    /// Initializes a new instance of the <see cref="ApplicationRoleValidator" /> class.
    /// </summary>
    /// <param name="manager">The manager.</param>
    public ApplicationRoleValidator(RoleManager<TRole, string> manager) : base(manager)
    {
        Manager = manager;
    }

    /// <summary>
    /// Validates a role before saving.
    /// </summary>
    /// <param name="item"></param>
    /// <returns></returns>
    /// <exception cref="System.ArgumentNullException">item</exception>
    public override async Task<IdentityResult> ValidateAsync(TRole item)
    {
        if (item == null)//<= break point here never reached.
        {
            throw new ArgumentNullException(nameof(item));
        }

        var rslt = base.ValidateAsync(item);
        if (rslt.Result.Errors.Any())
        {//return error if found
            return IdentityResult.Failed(rslt.Result.Errors.ToArray());
        }

        var errors = new List<string>();
        //validate the min num of members
        if (role.MinimumNumberOfMembers < 0)
        {
            errors.Add(string.Format(CultureInfo.CurrentCulture, "最小數は0以上でなければなりません。"));
        }

        return errors.Count > 0 ? IdentityResult.Failed(errors.ToArray()) : IdentityResult.Success;
    }
}

ApplicationRoleManager在創建期間設置自定義RoleValidator位置。 我可以打破那條線，所以我知道它正在被召喚。

public class ApplicationRoleManager : RoleManager<ApplicationRole, string>
{
    /// <summary>
    /// Initializes a new instance of the <see cref="ApplicationRoleManager"/> class.
    /// </summary>
    /// <param name="store"></param>
    public ApplicationRoleManager(IRoleStore<ApplicationRole, string> store)
        : base(store)
    {
    }
    /// <summary>
    /// Creates the specified options.
    /// </summary>
    /// <param name="options">The options.</param>
    /// <param name="context">The context.</param>
    /// <returns></returns>
    public static ApplicationRoleManager Create(IdentityFactoryOptions<ApplicationRoleManager> options, IOwinContext context)
    {
        var manager = new ApplicationRoleManager(new ApplicationRoleStore(context.Get<MyContext>()));
        manager.RoleValidator = new ApplicationRoleValidator<ApplicationRole>(manager);
        return manager;
    }
}
public class ApplicationRole : IdentityRole<string, ApplicationUserRole>
{
    public bool IsSystemGroup { get; set; }
    public string Description { get; set; } = "";
    public int MinimumNumberOfMembers { get; set; }
}

public class ApplicationRoleStore : RoleStore<ApplicationRole, string, ApplicationUserRole>
{
    public ApplicationRoleStore(MyContext context)
        : base(context)
    {
    }
}

通過在ApplicationRoleManager上調用Create來創建角色

var store = new ApplicationRoleStore(new MyContext());
var manager = new ApplicationRoleManager(store);
manager.Create(group);

Answer 1

您正在ApplicationRoleManager的Create方法中將ApplicationRoleValidator設置為ApplicationRoleManager的RoleValidator。 在您發布代碼的最后3行，你是newing ApplicationRoleManager的一個實例。 ApplicationRoleManager的此實例獲取默認的 RoleValidator。

如果要創建ApplicationRoleManager的實例，則必須將該邏輯放在構造函數中

public ApplicationRoleManager(IRoleStore<ApplicationRole, string> store) : base(store)
{
     RoleValidator = new ApplicationRoleValidator<ApplicationRole>(this);
}