Difficulty in MVC 4 with Json using ajax

Question

I'm trying to pass a variable to my JsonResult but she gets nul so here are my codes from my JsonResult and jQuery

    [HttpPost]
    public JsonResult MostraTela(Teste testea)
    {

        return Json(new { success = true });
    }

and :

   var testea = JSON.stringify(dado);
                    $.ajax({
                        url: '/Home/MostraTela',
                        type: 'POST',
                        dataType: 'json',
                        contentType: "application/json; charset=utf-8",
                        data: {testea: testea },
                        success: function (data) {
                            alert(data.success);
                        },
                        error: function () {
                            alert("error");
                        },

                    });

Agora eu fui tentar passar uma model e esta esta recebendo nulo novamente alguma ideia do que pode ser? I step up data: {testea: testea}, the error and if I step data: testea, everything comes null in my JsonResult

My model:

public class Teste
{
    public int idteste { get; set; }
    public string name { get; set; }
    public int age { get; set; }
    public string birthday { get; set; }
    public string salary { get; set; }

}

Mathew Thompson · Accepted Answer · 2013-01-23 18:18:54Z

2

Try giving the testea variable the name to make sure the action method assigns it to the same named parameter, like this:

$.ajax({
    url: url,
    type: "post",
    data: { testea: testea },
    dataType: 'json',
    success: function (data) {
        alert(data.success);
    },
   error: function () {
       alert("error");
    }
});

answered Jan 23, 2013 at 18:18

Mathew Thompson

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2 Comments

user2004932 Over a year ago

I accepted the answer, you have a new answer to this new problem?

Mathew Thompson Over a year ago

@user2004932 Thanks, I can't understand the language of your edit. If you have a different question, ask a different question on here :)

ron tornambe · Accepted Answer · 2013-01-23 18:14:16Z

0

Since the signature of the target method is a string, try passing 123 as a string, ex.

var testea = JSON.stringify("123");

answered Jan 23, 2013 at 18:14

ron tornambe

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1 Comment

ron tornambe Over a year ago

I think @mattytommo's is on the right track, but still assign testea to a string.

lante · Accepted Answer · 2013-01-23 18:26:03Z

0

if you are going to pass JSON, set the content-type to application/json.

$.ajax({
    type: 'POST',
    url: '@Url.Action("MostraTela", "Home")',
    data: { Id: 1, Name: 'Im a complex object' },
    success: function (data) {
        alert(data.success);
    },
    dataType: 'json',
    contentType: 'application/json, charset=utf-8',
});

Controller:

[HttpPost]
public JsonResult MostraTela(MyModel model, FormCollection collection)
{
    return Json(new { success = true });
}

Class:

public class MyModel
{
    public string Name { get; set; }
    public int Id { get; set; }
}

answered Jan 23, 2013 at 18:26

lante

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2 Comments

user2004932 Over a year ago

How do I get the model in my controller? I tried this but getting null

lante Over a year ago

this code works for me, see if your model and your json have the same property names

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