Question

in my javascript I try to call a controller method of the ASP.NET MVC V3 framework, actually I tried these both solutions:

$.get('/Controller/Method', tourID, function (data) {
    $.each(data, function (index, listelement) {
     ...do something with listelement
    });
}, "json");


$.getJSON('/Controller/Method', null, function (data) {
    $.each(data, function (index, listelement) {
     ...do something with listelement
    });
}); 

My Controller method looks like this:

public JsonResult GetList(int id)
{
    Object obj = repository.GetObject(id);
    // obj.Stuff is an EntityCollection
    return Json(obj.Stuff, JsonRequestBehavior.AllowGet);
}

My problem is, the controller function is not going to be called (I have a breakpoint set here). Well if I remove the parameter “id”, it can be called, but the “$.each…” section is not going to be executed. How can I debug the interaction between javascript and ASP.NET, what is going wrong here?

Thanks in advance and best regards,

Artjom

Answer 1

I used the Firebug plugin to find the problem. The list I tried to return in the controller method could not be serialized due to circular dependencies. I solved this by adding the [ScriptIgnore] attribute to navigation properties of the corresponding entity class.