How do I iterate through a mongo cursor and split a value into array?

Question

Code below. The outcome of this is that each document ends up with the array created from just one of the documents. In other words, "twindex" for each document is the same array. Any ideas what boneheaded thing I'm overlooking?

var cursor = db.splittest.find();

cursor.forEach(

    function(x) {

        db.splittest.update({}, {"$set" :  {"x.twindex" : x.content.split(" ")}}, true, true)

    })

Barrie · Accepted Answer · 2012-02-22 04:40:36Z

2

By specifying 'true, true' you're doing upserts on every document. Leave them out and it will default to false (so you don't need to add them in the code).

db.splittest.update({_id:x._id}, {"$set" :  {"x.twindex" :x.content.split(" ")}})

answered Feb 22, 2012 at 4:40

Barrie

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1 Comment

warrensallen Over a year ago

Thanks! I was unclear about the upsert function from the beginning. Totally did the trick.

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