Passing multiple values using

i want to pass multiple values in single column of database i have two tables (Schedule & Days). in the form i select days when i select multiple days then i should b add in db multiple. But it add only one day

public function store(Request $request) {

    $schedule = new menu;
    $days = new day;

    $sensor = new sensor;
    $schedule->scheduleName = $request->name;
    $schedule->start_time = $request->start_time;
    $schedule->end_time = $request->end_time;
    $schedule->timestamps = false;
    $schedule->s_daytime = $request->s_daytime;
    $schedule->e_daytime = $request->e_daytime;
    $days->days = $request->days;
    $days->timestamps = false;
    $sensor->timestamps = false;
    $sensor->sensor = $request->sensor;
    $schedule->save();
    $days->schedule_id = $schedule->id;
    $days->save();
    $sensor->schedule_id = $schedule->id;
    $sensor->save();




    return view('store');

}

via Chebli Mohamed