MongoDB filter when two fields equal

my data here

Does anyone who knows how to filter data and only keep those history_doc.data.objectId equals _id?

I have tried so many methods but none of them works

{'history_doc.data.objectId': {$eq: '$_id'}}

{'history_doc.data.objectId': {$eq: {$toString: '$_id'}}}

>Solution :

You can use $expr and $eq with $toObjectId into aggregation query like this:

.aggregate({
  $match: {
    $expr: {
      $eq: [
        "$_id",
        {
          "$toObjectId": "$history_doc.data.objectId"
        }
      ]
    }
  }
})

Example here.