MVC4 PartialViewResult return a view and not a PartialView
I have an LogInOrRegister page in my application, that calls 2 child actions LogInOrRegister.cshtml
@{
ViewBag.Title = "Log in";
}
@Html.Action("Login", "Account", new { returlUrl = ViewBag.ReturnUrl})
@Html.Action("Register", new { returlUrl = ViewBag.ReturnUrl})
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
The Login PartialView is:
@model Com.WTS.Portal.Models.LoginModel
<hgroup class="title">
<h1>@ViewBag.Title</h1>
</hgroup>
<section id="loginForm">
<h2>Use a local account to log in.</h2>
@using (Html.BeginForm(new { ReturnUrl = ViewBag.ReturnUrl })) {
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<fieldset>
<legend>Log in Form</legend>
<ol>
<li>
@Html.LabelFor(m => m.Email)
@Html.TextBoxFor(m => m.Email)
@Html.ValidationMessageFor(m => m.Email)
</li>
<li>
@Html.LabelFor(m => m.Password)
@Html.PasswordFor(m => m.Password)
@Html.ValidationMessageFor(m => m.Password)
</li>
<li>
@Html.CheckBoxFor(m => m.RememberMe)
@Html.LabelFor(m => m.RememberMe, new { @class = "checkbox" })
</li>
</ol>
<input type="submit" value="Log in" />
</fieldset>
}
</section>
My AccountController.cs contains the following code:
[AllowAnonymous]
public PartialViewResult Login(string returnUrl)
{
ViewBag.ReturnUrl = returnUrl;
return PartialView();
}
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public PartialViewResult Login(LoginModel model, string returnUrl)
{
if (ModelState.IsValid && WebSecurity.Login(model.Email, model.Password, persistCookie: model.RememberMe))
{
RedirectToLocal(returnUrl);
}
// If we got this far, something failed, redisplay form
ModelState.AddModelError("", "The user name or password provided is incorrect.");
return PartialView(model);
}
I see correctly the 2 partial view the I GET the page LogInOrRegister.cshtml
When I submit the form, if there is validation errors in the form, the view is displayed (no layout) instead of the partial view that should be part of the LogInOrRegster
Any idea ?
所以，如果你看看在这里发现的讨论https://stackoverflow.com/a/10253786/30850你会看到ChildActionOnlyAttribute被使用，以便一个Action可以在视图内呈现，但不能被提供给浏览器。
Ok, I found te solution. By passing route parameters to the partial view form :
@using (Html.BeginForm(new { ReturnUrl = ViewBag.ReturnUrl }))
I think we change the behaviour of the child action. Only by removing the route attribute :
@using (Html.BeginForm())
The PartialView is rendered in its container. Also, we can define the POST action as ChildActionOnly, it still work:
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
[ChildActionOnly]
public PartialViewResult Login(LoginModel model, string returnUrl)
If the return type is PartialViewResult ,specify the partialview name along with model in the method public PartialViewResult Login(LoginModel model, string returnUrl) otherwise use ActionResult as return type. ActionResult is an abstract class where as PartialViewResult is a subclass.
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