public function scheduleList(Request $request)
{
// 获取排序条件
$orderColumn = $request->get('sort_up', $request->get('sort_down', 'created_at'));
$direction = $request->get('sort_up') ? 'asc' : 'desc';
$courseSchedules = CourseSchedule::orderBy($orderColumn, $direction)->paginate(8);
return view('admin.course.listdetail', compact('courseSchedules'));
}
