lottery/app/Http/Controllers/DrawController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Models\CheckIn;
use App\Models\Prize;

class DrawController extends Controller
{
    public function draw_user_by_region(Request $request)
    {
        return CheckIn::where('is_checked_in', 'true')
            ->whereTime('check_ins.updated_at', '<=', $request->deadline)
            ->whereIn('region', $request->region)
            ->get()
            ->random($request->number);
    }
}