Replace object in array in Mongoose

Question

I'd like to replace an object in an array using an index, but nothing will save. This is what the document looks like:

{
    "_id": {
        "$oid": "58a71ec0c80a9a0436ae2fb1"
    },
    "owner": "[email protected]",
    "contacts": [
        {
            "work": "",
            "home": "",
            "mobile": "",
            "email": "",
            "company": "",
            "last": "Contact",
            "middle": "",
            "first": "New"
        },
        {
            "first": "Another",
            "middle": "",
            "last": "Contact",
            "company": "",
            "email": "",
            "mobile": "",
            "home": "",
            "work": ""
        }
    ],
    "__v": 1
}

And this is what I've tried..

Contacts.findById({_id: "58a71ec0c80a9a0436ae2fb1"}, function(err,document) {
    document.contacts[req.body.indexOfObjectToBeEdited] = req.body.updatedObject
    console.log(document)
    document.save(function(err) {
        return res.json({event:"Updated Contact"})
    })
})

Right before document.save() I console.log(document) and it reflects the correct changes. But when I save, nothing is updated in the mongodb and I receive no errors. What should I be doing differently?

What do you mean when you say "when I print"? You mean after the save function? — Israel Zinc
– Israel Zinc, Commented Feb 17, 2017 at 16:32
Right before document.save, I will console.log(document) and it looks updated. But when I check the db after actually saving, it looks like it was never updated. — user4732515
– user4732515, Commented Feb 17, 2017 at 16:33

Rohail Najam · Accepted Answer · 2017-02-17 16:35:25Z

4

try inserting this line right before saving. As modifying an array require we need to manual tell the mongoose the it is modified.

document.markModified("contacts");

Check the Usage Notes in the documentation for more information http://mongoosejs.com/docs/schematypes.html

answered Feb 17, 2017 at 16:35

Rohail Najam

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2 Comments

Israel Zinc Over a year ago

Learned something new!

Luis Febro Over a year ago

Thanks @Rohail Najam, you saved my sanity. I tried to update an array with a new one in every way without success, and "markModified" did the work.

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