How do you turn a Mongoose document into a plain object?

Question

How do you turn a Mongoose document into a plain object?

I have a document from a mongoose find that I want to extend before JSON encoding and sending out as a response. If I try adding properties to the doc it is ignored. The properties don't appear in Object.getOwnPropertyNames(doc) making a normal extend not possible. The strange thing is that JSON.parse(JSON.encode(doc)) works and returns an object with all of the correct properties. Is there a better way to do this?

node.js
mongoose

Answer 1

Mongoose Model's inherit from Document's, which have a toObject() method. I believe what you're looking for should be the result of doc.toObject().

http://mongoosejs.com/docs/api.html#document_Document-toObject

Answer 2

Another way to do this is to tell Mongoose that all you need is a plain JavaScript version of the returned doc by using lean() in the query chain. That way Mongoose skips the step of creating the full model instance and you directly get a doc you can modify:

MyModel.findOne().lean().exec(function(err, doc) {
    doc.addedProperty = 'foobar';
    res.json(doc);
});

Answer 3

the fast way if the property is not in the model :

document.set( key,value, { strict: false });

Answer 4

model.find({Branch:branch},function (err, docs){ if (err) res.send(err)

res.send(JSON.parse(JSON.stringify(docs))) });

Answer 5

Just use,

var convertedJSON = JSON.parse(JSON.stringify(mongooseReturnedDocument);

and Then,

convertedJSON.newProperty = 'Hello!'

'Hello!' can be anything, a number, a object or JSON Object Literal.

Cheers! :)