CODEWITHSUNDEEP
node.jsmongodbmongoose
Alex B
Alex B

Reputation: 1019

How to not save a certain field in Mongoose?

I am updating a record via Mongoose but when I try to not include a field by not including it in the properties object the field just gets set to empty.

My model:

var demo = new Schema({
    name: String,
    slug: String,
    code: String,
    details: String,
    scripts: [],
    css: [],
    status: {
        type: String,
        default: "draft"
    },
    lastModifiedDate: {
        type: Date,
        default: Date.now
    },
    projectId: Schema.ObjectId
});

Where I'm saving:

        Demo.find({ slug: req.params.demoSlug }, function(err,demos){
            if(err){
                console.log("Error retrieving demo from db");
                res.send(500,err);
                return;
            }
            demos[0].update({ _id:req.params.id },{
                name: data.demoName,
                slug: Utils.createSlug(data.demoName),
                // code: data.demoCode,
                details: data.demoDetails
            }, someCallback);
    });

As you can see the "code" field is commented out so why is the field value being overridden? Are there any flags I need to set when

Upvotes: 2

Views: 2994

Answers (1)

EmptyArsenal
EmptyArsenal

Reputation: 7464

It's not clear exactly what you're trying to do. You're searching for every document in a collection, but you're only updating one of them, which you're finding by _id. This looks like it can be done in one function, and you could be getting an error because you're calling update on a model that you returned. It looks like you should have written it like this:

Demo.update({ _id:req.params.id },{
    name: data.demoName,
    slug: Utils.createSlug(data.demoName),
    // code: data.demoCode,
    details: data.demoDetails
}, someCallback);

If you only want to update the document if its slug matches your demoSlug AND the _id matches, it would look like this:

Demo.update({ _id: req.params.id, slug: req.params.demoSlug },{
    name: data.demoName,
    slug: Utils.createSlug(data.demoName),
    // code: data.demoCode,
    details: data.demoDetails
}, someCallback);

If this still doesn't address your problem, hopefully it helps you explain more clearly what exactly you're looking for.

EDIT:

Another way to do this would be to use findOne and save. Try this:

Demo.findOne({ slug: req.params.demoSlug }, function(err, demo) {
    if(err) {
        console.log("Error retrieving demo from db");
        res.send(500, err);
        return;
    }
    demo.name = data.demoName;
    demo.slug = Utils.createSlug(data.demoName);
    demo.details = data.demoDetails;
    demo.save(callback);
}

Something like that should hopefully work. If neither of these work, I suspect that the problem is in data or in the document you're finding.

Upvotes: 2

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