Mongoose, Select a specific field with find
I want to select only a particular field with the help of the following code:
exports.someValue = function(req, res, next) {
//query with mongoose
var query = dbSchemas.SomeValue.find({}).select('name');
query.exec(function (err, someValue) {
if (err) return next(err);
res.send(someValue);
});
};
But in my JSON, I am receiving the _id also, my document schema only has two fields, _id and name
[{"_id":70672,"name":"SOME VALUE 1"},{"_id":71327,"name":"SOME VALUE 2"}]Can anybody explain me why I am getting this error?and how mongoose select fields ?
In MongoDB, the _id field of the document will always be present unless you explicitly eliminate it.
For eliminating the _id, refer to the following syntax:
exports.someValue = function(req, res, next) {
//query with mongoose
var query = dbSchemas.SomeValue.find({}).select('name -_id');
query.exec(function (err, someValue) {
if (err) return next(err);
res.send(someValue);
});
};