Question

我尝试创建一个函数，在运行搜索后，我可以随机返回结果集中结果中指定的数字。

搜索工作正常。但我需要能够根据用户输入从结果集中进行选择（例如，用户希望从返回的结果集中获取100条记录）。

这是我的查询代码

class Business extends Model
{
    protected $table = 'businesses_old';

    /*
     * Return search result on bussinesses
     * @param $params array
     * @return mixed
     */

    public static function search($params){
        $businesses = self::query();
        if(isset($params['business']) && $params['business']!=''){
            $businesses->where('name','like', "%".$params['business']."%");
            /*$businesses->orWhere('contact_first_name','like', "%".$params['business']."%");
            $businesses->orWhere('contact_last_name','like', "%".$params['business']."%");
            $businesses->orWhere('email','like', "%".$params['business']."%");
            $businesses->orWhere('address_1','like', "%".$params['business']."%");
            $businesses->orWhere('address_2','like', "%".$params['business']."%");*/
            $businesses->orWhere('website','like', "%".$params['business']."%");
            /*$businesses->orWhere('city','like', "%".$params['business']."%");*/
            $businesses->orWhere('description','like', "%".$params['business']."%");
            /*$businesses->orWhere('state','like', "%".$params['business']."%");*/

        }
        $businesses->orderBy('name','ASC');
        return $businesses->paginate(20);
    }

    public static function InRandom($businesses) {
        $random = inRandomOrder($businesses);
    }
}

以下是搜索控制器的代码

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use App\Business;

class SearchController extends Controller
{
    /**
     * Display search form
     *
     * @return mixed
     */
    public function index(){        
        return view('search/index');
    }

    /**
     * Display search results
     *
     * @return mixed
     */
    public function indexHandle(){        
        $params=[];       
        if($business = Input::get('business')){
            $params['business']=$business;            
        }
        $businesses='';
        if(!empty($params)){
            $businesses=Business::search($params);
        }else{
            return redirect('/search');
        }

        return view('search/result', compact('businesses','business'));
    }

}

Answer 1

如果我理解正确，你必须改变这一行

$businesses->orderBy('name','ASC');

有了这个

$businesses->inRandomOrder();

这将从整个表中随机播放记录，然后从随机结果中获得20条记录（针对当前页面）。

<强>但是分页现在不会像您期望的那样起作用，因为每次运行search函数时，随机化结果都会有所不同。

Answer 2

这应该适用于MySQL，只需更改LIMIT以满足您的需求：

ORDER BY RAND()
LIMIT 1

laravel5 - ＆gt;从返回的结果集中随机选择100个结果

2 个答案: