Asp.NET MVC：尝试调用删除控制器方法时出错

Question

Here is a portion of my razor code

@using (Ajax.BeginForm("DeleteBeacon", "Beacons", new { beaconId = Model.ID, instId = Model.InstID, pageNo = (int)ViewBag.pageNumber }, new AjaxOptions { LoadingElementId = "imgloaderIndex", OnSuccess = "OnSuccessDelete(data)", OnFailure = "OnFailureDelete(data)" }))

Here is my controller code:

public ActionResult DeleteBeacon(UserProfile userInfo, long beaconId, long instId, int? pageNo)
    {
        bool status = false;
        int pNumber = (pageNo ?? 1);          
        ViewBag.pageNumber = pNumber;
        try
        {
            status = blBeacon.DeleteBeacon(beaconId, userInfo.UserID, userInfo.SessionToken, null);
            if (status)
            {
                return Json(new { status = "success", pageNumber = pageNo, instId = Convert.ToInt64(TempData["InstituteId"]) });
            }
            else
            {
                return Json(new { status = "failure" });
            }
        }
        catch (Exception exp)
        {
            LogUtil.Error("BeaconsController\\DeleteBeacon:\n" + exp.Message);
            return Json(new { status = "failure", message = exp.Message });
        }

    }

It works fine in local server , but when hosted on production server, I'm getting error while trying to delete. Error is

POST https://portal.example.com/Beacons/DeleteBeacon?beaconId=36&instId=9594&pageNo=2 500 (Internal Server Error) 
Uncaught ReferenceError: data is not defined 

UPDATE: i dug a bit deeper and it shows data is not defined in OnFailureDelete(data) which means the POST call is failing but why ??

can any one suggest what may be wrong

Answer 1

I'm sure you don't need to pass data in the OnSuccess and OnFailure calls.

... { LoadingElementId = "imgloaderIndex", OnSuccess = "OnSuccessDelete", OnFailure = "OnFailureDeleteenter code here"

The JavaScript for those should have data declared though eg:

function OnSuccessDelete(data) { //... }

EDIT:

I'm unable to replicate your issue. However, here is my working example code, in the hope that it might be of some use to you:

Controller

[HttpPost]
public ActionResult DeleteBeacon(object beaconid, object instid, int pageno)
{
    return Json(new { result = "Hello" });
}

View

@using (Ajax.BeginForm("DeleteBeacon", "Home", new { beaconId = 1, instId = 2, pageNo = 3 }, new AjaxOptions { HttpMethod = "POST", OnSuccess = "OnSuccessDelete", OnFailure = "OnFailureDelete" }))
{
    <input type="submit" value="Click Me"/>    
}

    <script type="text/javascript">
        function OnSuccessDelete(data) {
            console.log(data);
        }

        function OnFailureDelete(data) {
            console.log("Failure " + data);
        }
    </script>

To call OnFailureDelete() you must set the response status to code to something other than 200 eg

[HttpPost]
public ActionResult DeleteBeacon(object beaconid, object instid, int pageno)
{
    Response.StatusCode = 500;
    return Json(new { result = "Hello" });
}