$.getJSON not returning a response with MVC3

Question

I spent a LONG time looking into this and just can't see what's wrong. I have the following:

$.getJSON(
                '/adminStatus/GetJsonData',
                { name: $('#textSearch')[0].value },
                function (data) {
                    alert("3");
//                  $('#studentList > div').remove();
//                  for (s in data) {
//                      alert("4");
//                      var student = data[s];
//                      $('#studentList').append('<div>(' + student.StudentId + ') ' + student.FirstName + ' ' + student.LastName + '</div>');
//                  }
                }
            );

This code fires an action in my controller and that action returns data. It's actually code from another example:

public JsonResult GetJsonData(string name)
        {
            return new JsonResult
            {
                Data = (from student in Student.GetStudentDataList()
                        where student.LastName.StartsWith(name)
                        select student).ToArray<Student>()
            };
        }

I check and Data is getting populated with data.

However nothing is happening with return data and when I added comments then I cannot even get the alert("3") to appear.

Am I doing something really obviously wrong? I think I'm copying a working example but nothing seems to be returned and the function (data) {} does not seem to execute.

Any help would be much appreciated.

Thanks,

Do you have any JavaScript errors on the page? Have you run your code through jslint.com to check for errors? — Andrew Whitaker
– Andrew Whitaker, Commented May 8, 2011 at 14:32

ataddeini · Accepted Answer · 2011-05-08 15:07:59Z

11

It would be best to check this in something like Firebug to see if there are any errors occurring. Trying to troubleshoot without knowing exactly what's going on is just going to lead to more frustration.

One thing I see being a potential problem is that you don't have JsonRequestBehavior.AllowGet set, so you might be getting a server error. To see if that's the case you can change your return to read:

var data = (from student in Student.GetStudentDataList()
           where student.LastName.StartsWith(name)
           select student).ToArray<Student>();

return Json(data, JsonRequestBehavior.AllowGet);

answered May 8, 2011 at 15:07

ataddeini

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1 Comment

Lee Gunn Over a year ago

Yeah - not having JsonRequestBehavior.AllowGet with MVC3 is going to be an issue

Surjit Samra · Accepted Answer · 2012-01-26 17:35:23Z

1

When debugging this kind of problem , fiddler is the best tool since it's always showing you what's under the hood.

edited Jan 26, 2012 at 17:35

Surjit Samra

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answered May 8, 2011 at 15:14

J.W.

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