$pull doesn't work

[周小帅]

_, err := db.Collection(conf.Sku).UpdateOne(context.TODO(), bson.M{
   "client_id": x.ClientId, "bid": x.BID, "_id": x.ID,
}, bson.M{"$pull": bson.D{{"tags", x.ID}}})

"tags" is a array that contain some ids.

result: the err is nil,but the program didn't do any thing!!Is the err in the $pull?

[Divjot Arora]

Hi,

Can you capture the result return from the UpdateOne function() (e.g. res, err := db.Collection().UpdateOne()) and take a look at the contents? It will give information like the number of documents matched by the filter and the number of documents actually updated.