failed to $push string like 56aea43cb6be380000616b07 to array in mongodb

Question

The _id =56aea43cb6be380000616b07; I tried to insert a long string like 56aea43cb6be380000616b07 to the shareids array in mongodb, it always failed "unexpected token illegal".

I tried this straightforward with the mongo command, it has to be '56aea43cb6be380000616b07' to make it work.

But I checked the type of the _id with typeof and it is a string. I tried to set it ObjectID(_id) but still the same. How could I get this through? Thanks.

collection.update({
              "name": name
            }, {
              $push: {
                "shareids": 
                  ObjectID(_id)
              }}, function (err) {
              if (err) {
                console.log("update failed.");
                mongodb.close();
                return callback(err);
              }

How are you defining `_id` as a variable here? Your error message seems to suggest you have emitted the quotes, and in fact it would be another line of code producing the error. Have you even imported `ObjectID` as a function directly? — Blakes Seven, Feb 01 '16 at 01:15
Hence the error. So you likely need `var ObjectID = require("mongo").ObjectID` to be included in your code to resolve the "unexpected token". — Blakes Seven, Feb 01 '16 at 02:39
yes, I did import ObjectID.My point is: how to convert 56aea43cb6be380000616b07 to '56aea43cb6be380000616b07'? — Chan Austin, Feb 01 '16 at 03:13
As I said earlier, it's meant to be a string, so you need the quotes. Anything without the string quotes would be an "unexpected token". Understand now? — Blakes Seven, Feb 01 '16 at 03:22
Thanks, Blakes! _id = "'"+_id+"'" should be working for me and was what I after. — Chan Austin, Feb 01 '16 at 03:47

score 0 · Accepted Answer · answered Feb 01 '16 at 03:36

0

The "unexpected token illegal" could be happened with following command.

> db.collection.update({name: 'test'}, {$push: {shareids: ObjectId(56aea43cb6be380000616b
07)}})
2016-02-01T11:34:35.738+0800 SyntaxError: Unexpected token ILLEGAL

However, add quotes to this number as bellow, it will be ok.

> db.collection.update({name: 'test'}, {$push: {shareids: ObjectId('56aea43cb6be380000616
b07')}})
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

answered Feb 01 '16 at 03:36

zangw

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_id = "'"+_id+"'"; I think this is what I was after:) – Chan Austin Feb 01 '16 at 03:44
What the type of original `_id`? – zangw Feb 01 '16 at 03:47
I think this thread is quite similar to what I was after: http://stackoverflow.com/questions/7825700/convert-string-to-objectid-in-mongodb – Chan Austin Feb 01 '16 at 05:25
still not working: db.collection.update({name: 'test'}, {$push: {shareids: ObjectId('56aea43cb6be380000616 b07')}}) with mongo API. but works with mongo command. – Chan Austin Feb 01 '16 at 10:30
@ChanAustin, with mongoose API not working? – zangw Feb 01 '16 at 10:42
solved, I was silly, I closed the db in the code before... – Chan Austin Feb 01 '16 at 10:55

failed to $push string like 56aea43cb6be380000616b07 to array in mongodb

1 Answers1