Problem about handling input and sendError in LeaveRequest create new one

I have validated the exception when people input the leave_from_date and leave_to_date that contains blocked day, but when i change to the new date, i cant add a new LeaveRequest. This is my code from LeaveRepository

public function create($inputs){

        $events = DB::table('events')
        ->where('event_type_id', 2)
        ->get();

        $from_dates = $inputs['leave_from_date']; 
        $to_dates = $inputs['leave_to_date']; 

        //foreach cái mảng
        foreach ($events as $event) {
            foreach ($from_dates as $key => $from_date) {
                if (($from_date >= $event->from_date && $from_date <= $event->to_date)
                    || ($to_dates[$key] >= $event->from_date && $to_dates[$key] <= $event->to_date)) {
                    return false;
                }
            }

        }
        return $this->model->create(request()->all());
    }

I also when testing with postman, i can only use Form-data with leave_from_date[] and leave_to_date[] like this. It is inconvenient for me. Is there anyway to handle the input better? When i change the leave_from_date and leave_to_date like this in form, it got error

Invalid argument supplied for foreach()

Is there anyway to handle input with validation like this. I have validated success that days contains blocked days will be changed but cannot add. Thank you

via Chebli Mohamed