What might be causing the Ajax call to fail in transferring the data from the action to the success callback function?

I am attempting to have the partial view HTML append to the content of a Modal-popup box. The script provided below is meant to execute the "Details" action when a button is clicked and return the HTML output to the success callback. Although the ActionMethod runs, I am unable to retrieve the corresponding view back as a parameter - the alert does not show up! Can you identify any issues in this script? What could be the reason why I am unable to obtain the view back?

<!--language: lang-js-->
<script> 
        $(".detail-link").click(function () {
            var Did = $(this).data("id");
            $.ajax({
                type: 'POST',
                url: "/Home/Details/",
                data: { id: Did },
                dataType: 'html',
                success: function myfunction(data){
                    alert(data);
                 }
            });
        });
    </script>

This is an action method called "Details"

<!--language: lang-cs-->
 [HttpPost]
        public ActionResult Details(int? id)
        {

            HomeModel model = new HomeModel();
            var book = db.Books.Where(b => b.Id == id).Include(b => b.Author).SingleOrDefault();
            if (book == null)
            {
                HttpNotFound();
            }

            book.DisplayNumber++;
            db.SaveChanges();
            model.bookDetails = book;
            return PartialView(model);
        }

If needed, I can also provide the view that I am trying to receive back.

Answer №1

Update the method Details to return a JsonResult object instead of ActionResult.

[HttpPost]
public JsonResult Details(int? id)
{
    HomeModel model = new HomeModel();
    var book = db.Books.Where(b => b.Id == id).Include(b => b.Author).SingleOrDefault();
    
    if (book == null)
    {
        HttpNotFound();
    }

    book.DisplayNumber++;
    db.SaveChanges();
    model.bookDetails = book;
    
    return Json(model);
}

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