ajax POST int parameter in asp.net core

Question

I am migrating my MVC project to Core and I have been having a hard time fixing all the old ajax calls.

I can pass a model and string parameters into the controller, however, ints are not working for me.

I can wrap them into a JSON object as a string parameter such as [FromBody]string objId in the controller, but then I have to parse the int val from the Json {'objId' : 1}.

Is there a way I can avoid this and just pass an int?

below is the code I am trying.

[HttpPost]
public JsonResult PassIntFromView([FromBody]int objId)
{
    //DO stuff with int here
}

here is the js.

var data = { "objId": 1};
    $.ajax({
        url: '@Url.Action("PassIntFromView", "ControllerName")',
        data: JSON.stringify(data),
        type: "POST",
        dataType: 'JSON',
        contentType: "application/json",
        success: function(data) {
            //do stuff with json result 
        },
        error: function(passParams) {
            console.log("Error is " + passParams);
        }
    });

The objId is always 0 in the controller.

I have tried this without doing JSON.stringify(data) as well with no result.

I have also tried all the different form attribute variations.

Answer 1

Try to use contentType as 'application/x-www-form-urlencoded':

 var data = { objId: 1 };
 $.ajax({
     url: '@Url.Action("PassIntFromView", "ControllerName")',
     type: "post",
     contentType: 'application/x-www-form-urlencoded',
     data: data,
     success: function (result) {
         console.log(result);
     }
 });

Then remove the [FromBody] attribute in the controller

[HttpPost]
public JsonResult PassIntFromView(int objId)
{
    //Do stuff with int here
}