DotNetOpenAuth-“视图”如何与此交互

我一直在考虑重构我的登录控制器,以获得更好的代码可读性。这样做的时候,我发现 Programmatic OpenID Relying Party example 看起来像这样

using DotNetOpenAuth.Messaging;

public ActionResult LogOn()
{
    var openid = new OpenIdRelyingParty();
    IAuthenticationResponse response = openid.GetResponse();

    if (response != null)
    {
        switch (response.Status)
        {
            case AuthenticationStatus.Authenticated:
                FormsAuthentication.RedirectFromLoginPage(
                    response.ClaimedIdentifier, false);
                break;
            case AuthenticationStatus.Canceled:
                ModelState.AddModelError("loginIdentifier",
                    "Login was cancelled at the provider");
                break;
            case AuthenticationStatus.Failed:
                ModelState.AddModelError("loginIdentifier",
                    "Login failed using the provided OpenID identifier");
                break;
        }
    }           

    return View();
}

[System.Web.Mvc.AcceptVerbs(HttpVerbs.Post)]
public ActionResult LogOn(string loginIdentifier)
{
    if (!Identifier.IsValid(loginIdentifier))
    {
        ModelState.AddModelError("loginIdentifier",
                    "The specified login identifier is invalid");
        return View();
    }
    else
    {
        var openid = new OpenIdRelyingParty();
        IAuthenticationRequest request = openid.CreateRequest(
            Identifier.Parse(loginIdentifier));

        // Require some additional data
        request.AddExtension(new ClaimsRequest
        {
            BirthDate = DemandLevel.NoRequest,
            Email = DemandLevel.Require,
            FullName = DemandLevel.Require
        });

        return request.RedirectingResponse.AsActionResult();
    }
}

现在这看起来比我从可下载的示例中使用的更干净、更容易阅读。(我下载了最新版本,这是他们给出的示例——这与我5个月前构建应用程序的示例相同。)

    [ValidateInput(false)]
    public ActionResult Authenticate(string returnUrl) {
        var response = openid.GetResponse();
        if (response == null) {
            // Stage 2: user submitting Identifier
            Identifier id;
            if (Identifier.TryParse(Request.Form["openid_identifier"], out id)) {
                try {
                    return openid.CreateRequest(Request.Form["openid_identifier"]).RedirectingResponse.AsActionResult();
                } catch (ProtocolException ex) {
                    ViewData["Message"] = ex.Message;
                    return View("Login");
                }
            } else {
                ViewData["Message"] = "Invalid identifier";
                return View("Login");
            }
        } else {
            // Stage 3: OpenID Provider sending assertion response
            switch (response.Status) {
                case AuthenticationStatus.Authenticated:
                    Session["FriendlyIdentifier"] = response.FriendlyIdentifierForDisplay;
                    FormsAuthentication.SetAuthCookie(response.ClaimedIdentifier, false);
                    if (!string.IsNullOrEmpty(returnUrl)) {
                        return Redirect(returnUrl);
                    } else {
                        return RedirectToAction("Index", "Home");
                    }
                case AuthenticationStatus.Canceled:
                    ViewData["Message"] = "Canceled at provider";
                    return View("Login");
                case AuthenticationStatus.Failed:
                    ViewData["Message"] = response.Exception.Message;
                    return View("Login");
            }
        }
        return new EmptyResult();
    }

现在这个例子有太多我喜欢的if语句,并且需要额外的处理( activity logging 和 checking for new user 或 add to existing account ),它开始变得非常混乱非常迅速。

不幸的是,如果我要重构我的代码,使其看起来更像第一个示例,我会遇到一个小问题。视图如何与此交互?我是说,它在寻找 openid.GetResponse() ,但如何提交该响应?

就像我说的,如果我能把它弄好,它看起来会比我现在的方式干净得多。