public ActionResult GetLogs(int courseId)
        {
            CourseBll           bll      = new CourseBll();
            var                 lessons  = bll.GetLogs(courseId);
            var                 result   = lessons.ConvertTo <IList <LessonViewModel> >();
            SuccessJsonResponse response = new SuccessJsonResponse {
                Data = result
            };

            return(Json(response, JsonRequestBehavior.AllowGet));
        }