ASP .Net MVC 3:儿童行动和重定向

Question

我需要在主页上显示注册表和登录表.

如果在这两个表单上验证失败,我需要在主页上显示正确的错误.

但如果没有错误,则必须将用户重定向到安全的仪表板.

为此,我child action在主页上使用如下:

@Html.Action("Register", "Membership")

它完全按预期工作,如果有任何错误,因为它能够re-render在partial view用正确的model有validation state信息.

但是如果没有错误,当它尝试重定向时,它会抛出一个错误,指出:

Child actions are not allowed to perform redirect actions.

有没有办法解决？我确信有一种方法可以在主页上放置注册和登录表单.很可能我不知道,因为我是ASP .Net MVC的新手.

你能指点我在正确的方向吗？

Answer 1

一种方法是使用ajax表单作为登录和注册位,而不是在提交有效时返回RedirectResult,返回一些json,其中一些客户端脚本将注意并用于执行重定向为了你.

这是一个简化的例子.

控制器:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.ComponentModel.DataAnnotations;
using MvcApplication12.Models;

namespace MvcApplication12.Controllers
{
    public class HomeController : Controller
    { 
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Register()
        {
            return PartialView(new UserDetails());
        }

        [HttpPost]
        public ActionResult Register(UserDetails details)
        {
            if (ModelState.IsValid)
            {
                return Json(new {redirect = true, url = Url.Action("Index","Dashboard")});
            }
            else
            {
                return PartialView(details); 
            }
        } 
    }
}

主页'索引'视图:

@{
    ViewBag.Title = "Index";
}
<script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
<script type="text/javascript">
    function checkForRedirect(data)
    {
        if (data.redirect && data.url)
        {
            location.href = data.url;
        }
    }
</script>

<p>Home page stuff.....</p>

<div id="RegistrationArea">
    @Html.Action("Register")
</div>

<p> Home page stuff.....</p>

注册表'注册'局部视图:

@model MvcApplication12.Models.UserDetails
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

@using (Ajax.BeginForm(new AjaxOptions()
{
    HttpMethod = "POST",
    Url = Url.Action("Register", "Home"),
    OnSuccess = "checkForRedirect(data)",
    UpdateTargetId = "RegistrationArea",
    InsertionMode = InsertionMode.Replace
}))
{
    @Html.LabelFor(m => m.UserName)
    @Html.EditorFor(m => m.UserName) 
    @Html.ValidationMessageFor(m => m.UserName)

    @Html.LabelFor(m => m.Password)
    @Html.EditorFor(m => m.Password) 
    @Html.ValidationMessageFor(m => m.Password)

    <input type="submit" />
}