Mongoose do not return _id and __v

Question

Is it possible to globally tell mongoose to not return the _id and __v fields in Node.js(Typescript)? It is pretty annoying and cluttering to put .select(-_id -__v) on every single query.

Answer 1

You can make this writing a Mongoose Plugin. A plugin its a function where you can attach hooks to every schema in your app. Here its an example:

module.exports = function deleteId(schema, options) {

  schema.post(['find', 'findOne'], function(docs, next) {
    if (!Array.isArray(docs)) {
      docs = [docs];
    }
   
    for (const doc of docs) {
      delete doc._id;
    }
    next()
  });
};

If you attach a function to the post find hook, you can delete the _id and then return the documents in your request.

Mongoose Plugin Docs