Upsert with Mongoskin (node.js and mongodb)

Question

I'm learning node.js and mongodb. I'm using the mongoskin module in my app, but I can't seem to get "upsert" functionality to work. I've read the (rather opaque) mongoskin guide on github. Here's what I've tried so far: ``` // this works. there's an insert then an update. The final "x" is "XX". db.collection("stuff").insert({a:"A"}, {x:"X"}); db.collection("stuff").update({a:"A"}, {x:"XX"}); // this does NOT work. I thought it would do an upsert, but nothing. db.collection("stuff").update({b:"B"}, {y:"YY"}, true); ``` How can I create "update or insert if not exists" functionality?

Accepted Answer

I've not tried it, but according to the doc here: https://github.com/guileen/node-mongoskin#inherit-updating and here: https://github.com/christkv/node-mongodb-native/blob/master/docs/insert.md, it looks like `options` is the third parameter, and it's supposed to be an object, like so:

```
db.collection("stuff").update({b:"B"}, {y:"YY"}, {upsert:true});
```

Upsert with Mongoskin (node.js and mongodb)

Solution

Problem