Calling controller with ajax in mvc

Question

I'm trying to fetch data from a controller and update my view using ajax.

This is my controller:

public class PatientController
{
    DatabaseContext db = new DatabaseContext();
    public JsonResult GetPatientFromCpr()
    {
        var patient = db.Patients.FirstOrDefault(p => p.Cpr == "2410911615");
        return new JsonResult() { Data = patient, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
    } 
}

And this is my ajax call:

    function getPatient() {
    cpr2 = $("#cpr-first").val() + $("#cpr-last").val();
    $.ajax(
    {
        url: '/Patient/GetPatientFromCpr',
        dataType: 'json',
        success: function () {
            alert("success");
        },
        error: function () {
            alert("error");
        },
    });
}

When i call the function i always get the error alert.

GET http://localhost:51140/Patient/GetPatientFromCpr 404 (Not Found)

Can someone point out what's wrong?

(EDIT) I now get a new error after adding ": Controller"

GET http://localhost:51140/Patient/GetPatientFromCpr 500 (Internal Server Error)

The url looks correct. What happens when you enter it in the address bar and navigate to it? Are your using areas? — user3559349
– user3559349, Commented Feb 5, 2016 at 10:20

user3559349 · Accepted Answer · 2016-02-05 10:44:26Z

1

Your 'PatientController' is not a Controller (it does not inherit from Controller)

public class PatientController : Controller
{
   ....
}

answered Feb 5, 2016 at 10:44

user3559349

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8 Comments

user3265569 Over a year ago

Wow i'm stupid. Thanks, but it didn't fix my error (Well it must have fixed something)

user3559349 Over a year ago

Are you saying your still getting a 404 Not Found?

user3265569 Over a year ago

Ahh no you are right.. GET localhost:51140/Patient/GetPatientFromCpr 500 (Internal Server Error)

user3559349 Over a year ago

Then that means your server code is throwing an exception - you need to debug your code (and you can use your browser tools to inspect the response and the error details (Network Tab). And please undo your edit to the question - or I will - you cant just change the question based on a correct answer (in makes my answer pointless)

user3559349 Over a year ago

@Smit. NO! OP is sending back a JsonResult so it needs to be dataType: 'json' and its a GET method so it needs to be type: 'get' but that is the default so it can be omitted.

|

anand · Accepted Answer · 2016-02-05 10:56:54Z

0

Inherit you PatientController with Base Controller Class

public class PatientController : Controller

In controller

 public JsonResult GetPatientFromCpr()
    {
        var patient = db.Patients.where(p => p.Cpr == "2410911615").FirstOrDefault();
        return new JsonResult() { Data = patient, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
    }

And Specify the type of ajax calling

type: "POST" or type: "GET" ....

This will help you to fix error

edited Feb 5, 2016 at 10:56

answered Feb 5, 2016 at 10:51

anand

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1 Comment

user3265569 Over a year ago

Thanks for your response, but it has already been replied. I now get a new error (500).

Smit Patel · Accepted Answer · 2016-02-05 11:31:00Z

0

Try using this, may be this works..!!

View:

function getPatient() {
    cpr2 = $("#cpr-first").val() + $("#cpr-last").val();
    $.ajax(
    {
        url: '/Patient/GetPatientFromCpr',
        //dataType: 'json',
        type:"POST", // GET or POST
        success: function () {
            alert("success");
        },
        error: function () {
            alert("error");
        },
    });
}

Controller:

public class PatientController : Controller
{
   ....
}

answered Feb 5, 2016 at 11:31

Smit Patel

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