How to use Fields parameter with Mongoose paginate

Current Behaviour

The following fields parameter in my Mongoose query is not recognised by paginate function since the query simply returns the entire result including “bids.bid”, which I am explicitly excluding. It appears any fields I include are disregarded.

Additionally, whenever I include a “fields” parameter in the paginate function, the _id is also never returned; however, removing the “fields” parameter entirely brings back the _id field as expected.

List.paginate({
	query: query,
	limit: paginationLimit,
	fields: {
		"bids.bid": 0
	}
}).then((result) => {
	sendJsonResponse(res, 200, result);
}).catch((err) => {
	sendJsonResponse(res, 404, err);
});

Expected Behaviour

The documentation for the paginate function refers to the find section so I was expecting the “fields” parameter to work as it does when not using Mongoose.

How should I exclude/include certain fields from my query using Mongoose and paginate?

[kontextbewusst]

I am having the exact same issue with version 7.0.0

[chrisdostert]

it seems this is caused by a bug;

mongoist API’s findAsCursor method uses projection as second param see docs

where as official mongodb driver uses options object as second param see docs

mongo-cursor-pagination currently does not account for this difference see src code thus doesn’t properly pass the projection in the case mongodb native client is used