public ActionResult GetCourseDetailModel(string courseID)
{
var courseDetail = courseApp.GetCourseDetail(courseID);
var courseChapterList = courseApp.GetCourseChapterList(courseID);
var courseTeacherList = courseApp.GetTeacherList(courseChapterList.Select(x => x.UserID).Distinct().ToArray());
CourseDetailModel model = new CourseDetailModel();
model.coursemodel = courseDetail;
model.chapter = courseChapterList;
model.teachers = courseTeacherList;
return(Json(model.ToJson()));
}
