日期值未正确设置

i am using two types of dates in my form one with the 'Y-m-d H:i:s' format which is for created_at,updated_at,deleted_at and one is for valid_to 'Y-m-d' the problem is my created_at are getting set properly but when i try to save the valid_from it's value doesn't get set and it saves 0000-00-00 in the database i have tried a couple of things but non of it seems to be working Controller code

 $input = $request->all();
//        if($request->input('valid_from')) {
//            $date = explode("-", $request->input('valid_from'));
//            $dob = $date['2'] . '-' . $date['1'] . '-' . $date['0'];
//        }
//        $input->valid_from = $dob;
//        return $request->all();
//        $date= $input->valid_from;
//        $date = \Carbon\Carbon::parse($request->current_date);
//
//        $day = $date->day;
//        $month = $date->month;
//        $year = $date->year;
//        dd($request);
//        $date = $input->valid_from;
//        $input->valid_from = date('M d,Y',$date);
////        $date = explode('-', $input->valid_from);
////        $input->valid_from = $date['2'].'-'.$date['1'].'-'.$date['0'];
        Promotion::create($input);

Model code

protected $fillable = ['valid_from'];
    protected $dates = [
        'deleted_at',
// 'valid_from',


    ];
//    protected $valid = ['valid_from'];
//    public function getFormattedValidFromAttribute($valid) {
//        $valid = new Carbon($valid);
//        return $valid->format('d-m-Y');
////        return $this->valid_from->format('d-m-Y');
//    }
//    public function getFormattedValidToAttribute() {
//        return $this->valid_to->format('d-m-Y');
//    }
//    protected function getDateFormat()
//    {
////        return 'U';
//        return 'd-m-Y ';
//    }

Migration

$table->date('valid_from');