baoshi-was/app/Http/Controllers/RegionController.php

<?php

namespace App\Http\Controllers;

use App\Components\AsyncResponse;
use App\Region;

class RegionController extends Controller
{
    use AsyncResponse;
    public function get()
    {
        $type = request("type");
        $regions = Region::query();
        if (!$type)$regions->where("type",$type);
        $this->success($regions->get());
    }
}