mongo aggregate

magg.js

db.collection
.aggregate(
 [
    {$match:{$text:{$search: "STRING"}, {/*wEVER*/}}},
    {$lookup:{from: 'otherCollectionJoin', localField: 'p', foreignField: '_id', as: 'otherCollectionJoin'}},
    {$unwind:"otherCollectionJoin"},
    {
      $group:{
        "_id":"$_id"
        , type: {$addToSet: "otherField"}
      }
    },
    {$match:{
       /*Other Match?*/
    }},
    {$unwind:"OtherField"},
    {$limit: (limit+skip)},
    {$skip: skip}
  ]
);