Introspection has `_id` on embedded documents.

[RobertLowe]

So there is an issue with _id being created on embedded documents / objects.

Consider the following document:

{
  _id: "foobar",
  emails: [{address: "foo@example.com}]
}

Will be introspected with: _id:

However after applying: UsersComposition.getFieldOTC('emails').removeField('_id');

It's gone. What's up here?

And example of the schema:

const UsersSchema = new Schema(
  {
    _id: { type: String }
    emails: [
      {
        address: {type: String, index: true},
        verified: Boolean
      },
    ],
  { strict: false, versionKey: false, autoIndex: false }
);

[RobertLowe]

I found the root cause for this:

https://github.com/Automattic/mongoose/blob/766e06e126459094bca1cf4659093af115ce6c95/lib/helpers/schema/handleIdOption.js#L5-L20

Mongoose by default will add _id to embedded documents. It needs to be disabled via:

    emails: [
      {
        _id: false,
        address: {type: String, index: true},
        verified: Boolean
      },
    ],

This can be closed, but may be worth documenting some how. Hopefully this issue posting will help someone some day.

[nodkz]

Thanks a lot for your investigation. Add a note to the readme.

[RobertLowe]

Awesome, thanks @nodkz !

[nodkz]

🎉 This issue has been resolved in version 7.5.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀