MongoDb updateOne not updating results

Question

I am trying to update a record inside a foreach loop. The loop runs and does not produce any errors, but nothing seems to update.

db.Collection1.aggregate({  
   $group:{  
      _id:"$RecordId",
      "DateUpdated":{  
         $max:"$DateUpdated"
      }
   }
}).forEach(function(doc){ 

    var recordId = doc._id;
    var date = new Date(doc.DateUpdated);

    db.Collection2.updateOne(
            { "_id" : recordId },
            { $set: {LastUpdate: date } }
        );     
});

Enable profiling and see what does it says. Also posting sample documents will be helpful — Saleem, Jul 11 '17 at 00:07
Have you verified that the `aggregate` query returns anything and your loop doesn't run with zero iterations? — Florian Winter, Aug 02 '17 at 09:38

score 0 · Answer 1 · answered Sep 02 '20 at 20:59

0

 _id: ObjectId(id) ||  _id: ObjectID(id)

I think there should be this method in your mongodb library either

ObjectId(<your id>)

or

ObjectID(<your id>)

answered Sep 02 '20 at 20:59

Steve Nginyo

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MongoDb updateOne not updating results

1 Answers1