zhuishuyun_quickapp/app/Modules/YunQi/Services/YqZsyTestService.php

<?php
/**
 * Created by PhpStorm.
 * User: z-yang
 * Date: 2019/1/11
 * Time: 9:50
 */

namespace App\Modules\YunQi\Services;

use App\Modules\YunQi\Models\YqZsyTest;

class YqZsyTestService
{
    public static function getRandomBooks($num=1):array{
        $books = YqZsyTest::select('bid')->where('type','yunqi')->get();
        if($books->count()<=0){
            return [];
        }
        $num = $books->count()>$num ?$num:$books->count();
        return $books->random($num)->pluck('bid')->all();
    }

    public static function getByBid($bid){
        return YqZsyTest::where('bid',$bid)->select('id','bid','type')->first();
    }
}