public ActionResult Authorise(LoginModel model, string returnUrl)
        {
            var users = new Code.Users();
            if (users.Exists(model.UserName))
            {
                // Authorise the request
                var oauthServiceProvider = new OAuthServiceProvider(consumers, issuedTokens, nonces);
                oauthServiceProvider.AuthorizePendingRequestToken(model.UserName.ToLower().Trim());
                this.HttpContext.Response.End();
                return new EmptyResult();
            }

            // If we got this far, something failed, redisplay form
            ModelState.AddModelError(string.Empty, "The user name does not exist.");
            return View(model);
        }
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                try
                {
                    var users = new Code.Users();
                    users.Create(model.UserName);
                    return RedirectToAction("Index", "Home");
                }
                catch (MembershipCreateUserException e)
                {
                    ModelState.AddModelError(string.Empty, ErrorCodeToString(e.StatusCode));
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }