/**
* 退选课程
* @author FuRongxin
* @date 2016-02-23
* @version 2.0
* @param string $kcxh 12位课程序号
* @return \Illuminate\Http\Response 课程表
*/
public function destroy($kcxh)
{
$course = Selcourse::whereXh(Auth::user()->xh)->whereNd(session('year'))->whereXq(session('term'))->whereKcxh($kcxh)->firstOrFail();
$course->delete();
return back()->withStatus('退选课程成功');
}
