Adding a second nested document

Question

I have a document with this structure

{
    name : "...",
    ...,
    ...,
    ...,
    hours : {
        standard : {
            ...
        }
}

I need to add:

{
    holiday : {
        ...
    }
}

inside the hours document and end up with:

{
    name : "...",
    ...,
    ...,
    ...,
    hours : {
        standard : {
            ...
        },
        holiday : {
            ...            
        }
    }
}

I tried running

{
    $set : {
        hours : {
            holiday : {
                ...            
            }
        }
    }
}

but that simply replaced my standard with holiday inside of hours. How can I achieve this?

Thanks!

Sergio Tulentsev · Accepted Answer · 2012-05-08 21:41:38Z

3

Try this instead:

db.collection.update(query, {$set: {'hours.holiday': {...}}});

answered May 8, 2012 at 21:41

Sergio Tulentsev

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3 Comments

Brandon Over a year ago

Thank you so much! (by the way this taught me the harsh lesson of why you test a query on a test db FIRST)

Sergio Tulentsev Over a year ago

you should make backups also :)

Brandon Over a year ago

I forgot I actually made one this morning. I am in good shape :) Thanks again.

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