Mongo $ addTo设置一个数组 [英] Mongo $addToSet an Array

问题描述

我有一个有效的查询：

$offenses = \App\LawCase::raw(function ($collection)  {
                return $collection->aggregate([
                    [
                        '$match' => ['active' => true, 'type' => 'criminal', 'current_offense_literal'=> ['$exists' => true]]
                    ],
                    [
                        '$group' => ['_id' => '$current_offense_category', 'offense_literals' => ['$addToSet' => '$current_offense_literal']]

                    ]
                ]);

            });

我只想向上面的addToSet添加一个附加值。例如，每个current_offense_literal也具有current_offense_literal_value，我想将其与current_offense_literal一起添加。

I just want to add an additional value to the addToSet above. For example Each current_offense_literal also has a current_offense_literal_value and I would like to add that along with current_offense_literal.

我尝试过的操作：

$offenses = \App\LawCase::raw(function ($collection)  {
                return $collection->aggregate([
                    [
                        '$match' => ['active' => true, 'type' => 'criminal', 'current_offense_literal'=> ['$exists' => true]]
                    ],
                    [
                        '$group' => ['_id' => '$current_offense_category', 'offense_literals' => ['$addToSet' => ['$current_offense_literal'=>['$push'=> '$current_offense_literal_value']]]]

                    ]
                ]);

            });

但是我得到：
无法识别的表达式'$ current_offense_literal'。

But I am getting: Unrecognized expression '$current_offense_literal'.

推荐答案

尝试执行此操作

$offenses = \App\LawCase::raw(function ($collection)  {
                return $collection->aggregate([
                    [
                        '$match' => ['active' => true, 'type' => 'criminal', 'current_offense_literal'=> ['$exists' => true]]
                    ],
                    [
                        '$group' => ['_id' => '$current_offense_category', 'offense_literals' => ['$addToSet' => ['current_offense_literal'=>'$current_offense_literal', 'current_offense_literal_value' =>'$current_offense_literal_value']]]

                    ]
                ]);

            });

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