PUT or DELETE verb in ASP.NET MVC on HTML form

问题

I have a simple user registration form, with two fields, one for username and another for the password. I have a controller called UserController which has these two actions:

[HttpGet]
public ActionResult Register()
{
    return View();
}

[HttpPut]
public ActionResult Register(string username, string password)
{
    // Registering user
    return View();
}

I used HTTP Put to make my website RESTful (PUT verb for insertion). However, when I submit my form, I get 404 error. Here is my form's HTML:

<form action='@Url.Action("Register", "User")' method="post">
<div class='field'>
    <label for='username'>
        Username:
    </label>
    <input type='text' id='username' name='username' maxlength='100' />
</div>
<div class='field'>
    <label for='password'>
        Password:
    </label>
    <input type='password' id='password' name='password' maxlength='50' />
</div>
</form>

What do I miss here? What's wrong?

回答1:

Since no one really answered it here, I'll add my .02

MVC adds the following field to the html form (used for example when using Html.BeginForm()) to support this. Even though HttpPut and HttpDelete are not actually supported for Html5 (they were at one point and then removed from the draft specification), the server libs for MVC will properly route the request to your HttpDelete or HttpPut method when the following form field is posted with your HttpPost request:


@using (Html.BeginForm("SomeAction"){ 
   @Html.HttpMethodOverride(HttpVerbs.Delete)
}

回答2:

HTML forms (up to HTML version 4 and XHTML 1) only support GET and POST as HTTP request methods. XHTML 2.0 will support GET, POST, PUT and DELETE for forms.

A workaround for this for methods through POST by using a hidden form field which is read by the server and dispatch accordingly.

For now, you may consider using [HttpPost] now or use XmlHttpRequest to use Put verb on your request.

UPDATE

You may use SimplyRestfulRouteHandler from MvcContrib

It quite simple, register this on RegisterRoutes

public static void RegisterRoutes(RouteCollection routes)
{
     SimplyRestfulRouteHandler.BuildRoutes(routes);
}

Add a hidden field like this with name _method inside your form

<input type="hidden" name="_method" value="put" />

This would be good to go.

回答3:

You could use $.ajax to submit the form with the correct verb

Here is an example

来源：https://stackoverflow.com/questions/8182620/put-or-delete-verb-in-asp-net-mvc-on-html-form

标签

asp.net-mvc

asp.net-mvc-3

rest

forms

http-put