Change Mongodb query result in place

Question

Change Mongodb query result in place

Restaurant is a Mongoose model. I tried to change things in place and it doesn't work:

  Restaurant.find({}, function(err, results) {
    for (var i = 0; i < results.length; i++) {
      delete results[i].__v;
  }

I think results[i] is a model object. I tried to see check the property descriptors with the following and it's says undefined:

console.log(JSON.stringify(Object.getOwnPropertyDescriptor(results[i], '__v')));

Why doesn't delete on the object work? And how come I can't see the property descriptor?

EDIT: So it's a Mongoose document. But what in Javascript parlance can an object such as a Mongoose document be based on something else other than a Javascript object? Some wrapper base on internal C code or something?

node.js
mongoose

Answer 1

results isn’t a Javascript Object and then you can’t use remove

You can Convert in Javascript Object with results.toObject() doc

or you can do Restaurant.find({},{lean:true}doc

and then you can do delete results[i].__v;