Meteor mongodb $inc with update

Question

I have this mongo collection and vars:

items:{
 type_one: 0,
 type_two: 0
}

var valueOne = 1;
var nameItem = type_one;

---

I try to update a

Answer 1

You need to build your query dynamically using the bracket [] operator. Also "nameItem" must be a string.

var valueOne = 1;
var nameItem = 'type_one';
var inc = {};
inc[ 'items.' + nameItem ] = valueOne;
Collection.update({ createdBy: user_id }, { '$inc': inc } )

Answer 2

The only possible reasons I can come up with this that either you inserted number into collection in the form of String or you're trying to increment with String value. Try using parseInt(stringValue) in your code.