Question

I have this document stored in mongodb document:

{
    "_id":ObjectId("4eb7642ba899edcc31000001")
    "hash":"abcd123"
    "value":"some_text_here"
}

I am using NodeJS to access the database:

collection.findOne({'hash' : req.param('query') }, 
    function(err, result){ 
    console.log(res);   
});

The result of this query is the whole document, however I need to get only the “value” text: “some_text_here”

How can this be done?

Answer 1

You can specify the fields that you are interested in (_id will always be returned, though):

collection.findOne({'hash': req.param('query') },
                   {fields: ['value'] },
                   callbackFunction );