node js mongodb remove error "key $lte must not start with '$'"

Question

    db.collection('session').remove({timestamp:{'$lte':a}},function(err, docs) {
        console.log(err)
        console.log(docs)
    });

Version mongodb is 2.6.5, when I make this query from Robomongo visual manager it works normally but from node js it throws error "key $lte must not start with '$'"

It worked fine when I tried it. Can you edit your question to show an example doc and the contents of `a`. — JohnnyHK, Oct 30 '14 at 13:25

score 0 · Answer 1 · answered Feb 21 '15 at 10:46

I also faced similar issue with some downloaded code- shell worked properly but Node driver failed (there was no other external library like mongoose). My installed MongoDB version was 2.6.6 and the package.json had a mongodb entry as "~1.3.18". With a suggestion from someone, I changed the entry value to "~1.4.31" which resolved my problem.

score -1 · Answer 2 · answered Oct 29 '14 at 11:19

-1

Remove the quotes around $lte. It is not a key, but a directive.

answered Oct 29 '14 at 11:19

Markus W Mahlberg

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Actually, it _is_ just a key in a JavaScript object at that point, so it doesn't matter. – JohnnyHK Oct 31 '14 at 03:23
@JohnnyHK: Iirc, it is preprocssed, isn't it? – Markus W Mahlberg Oct 31 '14 at 09:56
http://stackoverflow.com/questions/4348478/what-is-the-difference-between-object-keys-with-quotes-and-without-quotes – JohnnyHK Oct 31 '14 at 12:48

node js mongodb remove error "key $lte must not start with '$'"

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