$bucket 无法识别的选项：$group

问题描述

在 mongodb laravel 中使用 $bucket 运行 $group 时出现上述错误。

输入集合：

{
    "id": "n54qllhzwdlxqvy","season_id": "vl7oqdehzjxr510","status_id": 8,"venue_id": "","referee_id": "","neutral": 1,"note": "","home_scores": [0,0],"away_scores": [1,"home_position": "","away_position": "","coverage": {
        "mlive": 0,"lineup": 0
    },"round": {
        "stage_id": "ednm9whz7xoryox","round_num": 0,"group_num": 3
    },"updated_at": "2021-05-03 16:53:52","competition_id": "gpxwrxlhdgryk0j","competition_name": "Chinese U18 Women's National Games","home_team_id": "2y8m4zh8xwjql07","home_team_name": "Fujian U18 Women ","away_team_id": "8yomo4hvxg2q0j6","away_team_name": "Shandong U18 Women","match_time": "2021-05-03 15:00:00","match_tsp": 1620025200,"created_at": "2021-05-04 14:33:05"
}

            $data = DB::connection('mongodb_football')->collection('match_list')->raw(function ($collection) {
        return $collection->aggregate([
            [
                '$bucket' => [ 
                    'groupBy' => '$competition_id','boundaries' => ["4zp5rzgh3nq82w1","4zp5rzghjjgq82w","4zp5rzghkzq82w1","4zp5rzghpvnq82w","4zp5rzghx38q82w","4zp5rzghx5q82w1"],'default' => "Other",'output' => [
                        "data" => [
                            '$push' => [
                                "season_id" => '$season_id'
                            ]
                        ]
                    ]
                ]
            ]
        ]);
    });

输出：

需要根据competition_id对所有数据进行分组，需要所有数据。

解决方法

1. 从 groupBy、boundaries、default 和 output 中删除 $ 前缀。

$bucket 'groupBy' 字段必须定义为以 $ 为前缀的路径或表达式

2. 它说 group by field 需要引用字段，它应该以 $ 为前缀，但您已将其分配在数组括号 [] 中。

试试下面的语法，我还没有测试过，但会的，

$data = DB::connection('mongodb_football')->collection('match_list')->raw(function ($collection) {
    return $collection->aggregate([
        [
            '$bucket' => [ 
                'groupBy' => '$competition_id','boundaries' => ["4zp5rzgh3nq82w1","4zp5rzghjjgq82w","4zp5rzghkzq82w1","4zp5rzghpvnq82w","4zp5rzghx38q82w","4zp5rzghx5q82w1"],'default' => "Other",'output' => [
                    "data" => [
                        '$push' => [
                            "season_id" => '$season_id'
                        ]
                    ]
                ]
            ]
        ]
    ]);
});

Playground

,

解决方案

$data = DB::connection('mongodb_football')->collection('match_list')->raw(function ($collection) {
return $collection->aggregate([
    [
        '$bucket' => [ 
            'groupBy' => '$competition_id','output' => [
                "data" => [
                    '$push' => [
                        "season_id" => '$season_id'
                    ]
                ]
            ]
        ]
    ]
]);

});