JavaScript无法在C＃MVC4中触发

Question

I have the following code in my view :

    <script type="text/javascript">
    function OnCancelClick(e)
    {
        var jobId = e;
        var flag = confirm('You are about to cancel job : ' + jobId + '. Are you sure you want to cancel this job?');
        if (flag) {
            $.ajax({
                url: '/job/CancelJob',
                type: 'POST',
                data: { jobId: jobId },
                dataType: 'html',
                success: function (result) { alert('Job ' + jobId + ' was cancelled.'); document.location = "@Url.Action("Index", "Job")"; },
                error: function () { alert('Something went wrong. Check the log for more information.'); }
        });
    }
    return false;
    }
</script>

In my view I also have :

<input type="submit" id="cancelButton" value="Cancel" onclick="javascript: return OnCancelClick(@Model.Id);" />

In my controller I have :

[HttpPost]
        public ActionResult CancelJob(int jobId)
        {
            try
            {
                logger.LogInfo(string.Format("<start> Cancel-button clicked for job : {0}", jobId), jobId);

                JobCommandService.ChangeStatus(jobId, 6);

                logger.LogInfo(string.Format("<end> Cancel-button clicked for job : {0}", jobId), jobId);

                return RedirectToAction("Index", "Job");
            }
            catch (Exception ex)
            {
                logger.LogError(ex.Message, ex, jobId);
                Response.StatusCode = (int)HttpStatusCode.InternalServerError;
                return Json(new { Success = false, Message = ex.Message });
            }
        }

When I run this in my VS2012 it works just fine. When I deploy it to the server, I'm getting the message that something went wrong. In my logging there is no trace of the button being clicked.

Answer 1

As per your comment, when deployed your app is installed in accindigoapps.blabla.lok/jobmonitor .

However your script has the url hardcoded as url: '/job/CancelJob' . That will mean:

• when you are debugging from VS your script will work because the request is being sent to a url like http://localhost:XXX/job/CancelJob
• however in production, the request will be sent to http://accindigoapps.blabla.lok/job/CancelJob , missing the jobmonitor part.

You need a way to inform your JS code about the base url of your application:

• You could generate the Url in a Razor view using Url.Action("CancelJob","job") and pass that Url into your javascript code.

• Another option would be to use Url.Content("~/") in some javascript of your base layout. That helper Url.Content("~/") will return only your application folder, / in your dev environment and /jobmonitor/ when deployed. That way you will have your app root-relative url available to any script, so you can use it to build root-relative urls as you were doing in your script:

   <script> var myApp = {}; myApp.BaseUrl = '@Url.Content("~/")'; </script> //Some other script like yours would be able to keep using root-relative urls as: $.ajax({ url: myApp.BaseUrl + 'job/CancelJob', ... 

If you prefer to generate full urls, you could follow a similar approach. Have a look at this question

Hope it helps!