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  • Laravel find in set排序

    做项目遇到个需求,需要对结果集中的数据进行指定规则的顺序排列。
    例如,用户状态有四种:

    0=>未激活;1=>正常;2=>禁用;3=>软删除

    现在的需求是,我要按照:正常->未激活->禁用->删除;这个顺序来进行排序,同时按照注册时间降序,网上查了很多资料,国内提到这个的很少,在stackOverFlow上找到了答案!
    先上解决方案:

    public function index($customer_type = null) {
        $search = request('search');
        $perPage = request('perPage') ? request('perPage') : 10;
        $customer_type = $customer_type ? $customer_type : request('customer_type');
        // \DB::enableQueryLog();
        $data = Customer::select(['id', 'email', 'user_name', 'nick_name', 'status', 'phone', 'create_time'])
            ->where('customer_type', '=', $customer_type)
            ->where(function ($query) use ($search) {
                if ($search) {
                    $query->where('user_name', 'like binary', '%' . $search . '%')
                        ->orWhere('nick_name', 'like binary', '%' . $search . '%')
                        ->orWhere('phone', 'like binary', '%' . $search . '%')
                        ->orWhere('email', 'like binary', '%' . $search . '%');
                }
            })
            ->orderByRaw("FIELD(status, " . implode(", ", [1, 2, 0, 3, 4]) . ")")
            ->orderBy('create_time', 'desc')
            ->paginate($perPage);
        // $query = \DB::getQueryLog();
        // dd($data);
        //追加额外参数,例如搜索条件
        $appendData = $data->appends(array(
            'search' => $search,
            'perPage' => $perPage,
        ));
        return view('admin/customer/customerList', compact('data'));
    }
    

      打印出来的sql语句如下:

    参考了以下链接:
    https://stackoverflow.com/questions/42068986/laravel-weird-behavior-orderbyrawfield

    https://stackoverflow.com/questions/34244455/how-to-use-not-find-in-set-in-laravel-5-1

    https://stackoverflow.com/questions/35594450/find-in-set-in-laravel-example/35594503

    find_in_set 复杂应用:

    public function get_teacher_list($timeType, $name, $perPage = 10, $personality = 0, $teachingStyle = 0, $ageType = 0)
    {
        // \DB::enableQueryLog();
        $result_data = DB::table('teacher_info as ti')
            ->select('ti.*')
            ->join('customer', 'customer.id', '=', 'ti.customer_id')
            ->where(function ($query) use ($personality) {
                if (trim($personality)) {
                    $query->whereRaw("find_in_set($personality,ti.label_ids)");
                }
            })
            ->where(function ($query) use ($teachingStyle) {
                if (trim($teachingStyle)) {
                    $query->whereRaw("find_in_set($teachingStyle,ti.label_ids)");
                }
            })
            ->where(function ($query) use ($ageType) {
                if (trim($ageType)) {
                    $ageType = explode('-', $ageType);
                    $query->whereRaw("DATE_FORMAT(FROM_DAYS(TO_DAYS(NOW())-TO_DAYS(birthday)), '%Y')+0 between $ageType[0] and $ageType[1]");
                }
            })
            ->where(function ($query) use ($timeType) {
                //1本周,2下周
                if ($timeType == 1) {
                    $query->where('ti.can_appointment_1', 1);
                } elseif ($timeType == 2) {
                    $query->where('ti.can_appointment_2', 1);
                } else {
                    $query->where('ti.can_appointment_1', '>', 0)
                        ->orWhere('ti.can_appointment_2', '>', 0);
                }
            })
            ->where(function ($query) use ($name) {
                if (trim($name)) {
                    $query->where('ti.chinese_name', 'like', '%' . $name . '%')
                        ->orWhere('ti.english_name', 'like', '%' . $name . '%');
                }
            })
            ->where('ti.status', 1)
            ->orderBy('ti.total_teach_num', 'desc')
            ->orderBy('ti.total_star_num', 'desc')
            ->orderBy('ti.satisfaction', 'desc')
            ->orderBy('ti.comment_num', 'desc')
            ->orderBy('ti.english_name', 'asc')
            ->paginate($perPage);
        // dd($result_data, \DB::getQueryLog());
    
        return $result_data;
    }
    

      专门拿出来看一下:

    $ids = array(1,17,2);
    
    $ids_ordered = implode(',', $ids);
    
    $items = User::whereIn('id', $ids)
     ->orderByRaw(DB::raw("FIELD(id, $ids_ordered)"))
     ->get();
    

      转载:https://blog.csdn.net/zhezhebie/article/details/78357354

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  • 原文地址:https://www.cnblogs.com/lxwphp/p/15453363.html
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