Can i add numeric value to existing numeric value in Mongodb by using update method

Question

If i have a mongodb collection named Posts with document like following:

{
    _id: 11111,
    time:40
}

how can i add numeric value to the value 'time' on the fly using .update method? resulting with the following:

{
    _id: 11111,
    time:50
}

I was hoping something like:

Posts.update(this._id, {
    $set: {time:{time+10}}
});

which don't seem to work. Is this even possible? any ideas?

Paul S. · Accepted Answer · 2016-05-29 22:53:12Z

2

Posts.update({
    _id: this._id
}, {
    $inc: {
        time: 10
    }
});

answered May 29, 2016 at 22:53

Paul S.

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