Using Mongoose after cloning an found document as object additional fields appear on response

Asked Aug 18 '21 at 09:55

Active Aug 18 '21 at 10:01

Viewed 64 times

I use mongodb as database and mongoose as ODM, and express(nodejs) as backend. So, I find item as:

const foundItem = await ItemModel.findOne({_id: 344363434643}).select(
      'name age'
);

after I clone the foundItem as:

const clonedFoundItem = {...foundItem}

But when I return it on frontend:

  res.send({
      data: clonedFoundItem
    });

I get some additional properties that not present in original object.

$__: {strictMode: true, selected: {…}, getters: {…}, _id: "344363434643", wasPopulated: false, …}
$init: true
$locals: {}
$op: null
isNew: false
_doc: {_id: "344363434643", name: 'Jim', age: '12'}

And they not presented on backend.

How I can get rid of its?

edited Aug 18 '21 at 10:01

asked Aug 18 '21 at 09:55

Gregory Kafanov

Why don't you return the founditem – Zein Aug 18 '21 at 10:01
Because I need to add some additional fields, some sort of computed fields, that not presented in original doc. – Gregory Kafanov Aug 18 '21 at 10:03
2

https://stackoverflow.com/questions/7503450/how-do-you-turn-a-mongoose-document-into-a-plain-object this may be interesting to you – Tobias S. Aug 18 '21 at 10:03
Yes its works, i just added .lean() at const foundItem = await ItemModel.findOne({_id: 344363434643}).select( 'name age' ).lean(); – Gregory Kafanov Aug 18 '21 at 10:11

Using Mongoose after cloning an found document as object additional fields appear on response

0 Answers0