asp.net mvc 3 - Proper way to use AJAX Post in jquery to pass model from strongly typed MVC3 view

Question

I'm a novice web programmer so please forgive me if some of my "jargon" is not correct. I've got a project using ASP.NET using the MVC3 framework.

I am working on an admin view where the admin will modify a list of equipment. One of the functions is an "update" button that I want to use jquery to dynamically edit the entry on the webpage after sending a post to the MVC controller.

I presume this approach is "safe" in a single admin setting where there is minimal concern of the webpage getting out of sync with the database.

I've created a view that is strongly typed and was hoping to pass the model data to the MVC control using an AJAX post.

In the following post, I found something that is similar to what I am looking at doing: JQuery Ajax and ASP.NET MVC3 causing null parameters

I will use the code sample from the above post.

Model:

public class AddressInfo 
{
    public string Address1 { get; set; }
    public string Address2 { get; set; }
    public string City { get; set; }
    public string State { get; set; }
    public string ZipCode { get; set; }
    public string Country { get; set; }
}

Controller:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Check(AddressInfo addressInfo)
    {
        return Json(new { success = true });
    }
}

script in View:

<script type="text/javascript">
var ai = {
    Address1: "423 Judy Road",
    Address2: "1001",
    City: "New York",
    State: "NY",
    ZipCode: "10301",
    Country: "USA"
};

$.ajax({
    url: '/home/check',
    type: 'POST',
    data: JSON.stringify(ai),
    contentType: 'application/json; charset=utf-8',
    success: function (data.success) {
        alert(data);
    },
    error: function () {
        alert("error");
    }
});
</script>

I have not had a chance to use the above yet. But I was wondering if this was the "best" method to pass the model data back to the MVC control using AJAX?

Should I be concerned about exposing the model information?

Answer 1

I found 3 ways to implement this:

C# class:

public class AddressInfo {
    public string Address1 { get; set; }
    public string Address2 { get; set; }
    public string City { get; set; }
    public string State { get; set; }
    public string ZipCode { get; set; }
    public string Country { get; set; }
}

Action:

[HttpPost]
public ActionResult Check(AddressInfo addressInfo)
{
    return Json(new { success = true });
}

JavaScript you can do it three ways:

1) Query String:

$.ajax({
    url: '/en/Home/Check',
    data: $('#form').serialize(),
    type: 'POST',
});

Data here is a string.

"Address1=blah&Address2=blah&City=blah&State=blah&ZipCode=blah&Country=blah"

2) Object Array:

$.ajax({
    url: '/en/Home/Check',
    data: $('#form').serializeArray(),
    type: 'POST',
});

Data here is an array of key/value pairs :

=[{name: 'Address1', value: 'blah'}, {name: 'Address2', value: 'blah'}, {name: 'City', value: 'blah'}, {name: 'State', value: 'blah'}, {name: 'ZipCode', value: 'blah'}, {name: 'Country', value: 'blah'}]

3) JSON:

$.ajax({
      url: '/en/Home/Check',
      data: JSON.stringify({ addressInfo:{//missing brackets
          Address1: $('#address1').val(),
          Address2: $('#address2').val(),
          City: $('#City').val(),
          State: $('#State').val(),
          ZipCode: $('#ZipCode').val()}}),
      type: 'POST',
      contentType: 'application/json; charset=utf-8'
});

Data here is a serialized JSON string. Note that the name has to match the parameter name in the server!!

='{"addressInfo":{"Address1":"blah","Address2":"blah","City":"blah","State":"blah", "ZipCode", "blah", "Country", "blah"}}'