yii\mongodb\QueryBuilder::aggregate PHP Метод

    public function aggregate($collectionName, $pipelines, $options = [])
    {
        foreach ($pipelines as $key => $pipeline) {
            if (isset($pipeline['$match'])) {
                $pipelines[$key]['$match'] = $this->buildCondition($pipeline['$match']);
            }
        }
        $document = array_merge(['aggregate' => $collectionName, 'pipeline' => $pipelines, 'allowDiskUse' => false], $options);
        return $document;
    }