Question

如何从asp.net core 2数据库动态设置IdentityOptions？

我可以静态设置

services.Configure<IdentityOptions>(options =>
            {
                // Password settings.
                options.Password.RequireDigit = true; 
                options.Password.RequireLowercase = true;
                options.Password.RequireNonAlphanumeric = true;
                options.Password.RequireUppercase = true;
                options.Password.RequiredLength = 6;
                options.Password.RequiredUniqueChars = 1;

                // Lockout settings.
                options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);

                options.Lockout.MaxFailedAccessAttempts = 2;
                options.Lockout.AllowedForNewUsers = true;

                // User settings.
                options.User.AllowedUserNameCharacters =
                "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._@+";
                options.User.RequireUniqueEmail = true;
            });

但是我想从数据库中配置它。我对此有一些专栏。

var staticSetting = _unitOfWork.StaticSettings.GetAll().FirstOrDefault();
staticSetting.RequireDigit
staticSetting.RequireLowercase
staticSetting.RequireNonAlphanumeric
staticSetting.RequireUppercase 
staticSetting.RequiredLength 
staticSetting.RequiredUniqueChars 
staticSetting.DefaultLockoutTimeSpanFromMinutes
staticSetting.MaxFailedAccessAttempts
staticSetting.AllowedForNewUsers

如何从哪里设置数据库？

Answer 1

对于此要求，您可以从服务集合（如

）解析IUnitOfWork

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {

    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, IOptions<IdentityOptions> identityOptions)
    {
        this.staticSetting = app.ApplicationServices.CreateScope().ServiceProvider
                        .GetRequiredService<ApplicationDbContext>().StaticSettings.FirstOrDefault();
        identityOptions.Value.Password.RequireDigit = staticSetting.RequireDigit;

    }
}

您无法通过IdentityOptions配置services.Configure<IdentityOptions>，因为此操作将在add-migration期间和Configure方法之前运行。

Answer 2

如何通过以下代码实现IUnitOfWork：我可以得到它吗？

public class CustomIdentityOptions : IOptions<IdentityOptions>
{
    **public IUnitOfWork _unitOfWork;**
    public IdentityOptions Value { get; private set; }


    public CustomIdentityOptions(IUnitOfWork unitOfWork)
    { 
        var staticSetting = _unitOfWork.StaticSettings.GetAll().FirstOrDefault();
        Value = new IdentityOptions
        {
            Lockout = new LockoutOptions
            {
                AllowedForNewUsers = true,
                DefaultLockoutTimeSpan = TimeSpan.FromMinutes(1),
                MaxFailedAccessAttempts = staticSetting.MaxFailedAccessAttempts
            }
        };
    }
}

如何从数据库ASP.NET Core 2动态设置IdentityOptions

2 个答案: