node.js - Insert document with nested ObjectId -

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i trying insert document mongodb looks this:

_id : objectid(<id>) players : {     objectid(<id>) {        entry : 'foo'     } }

however, can't form json in node objectid key. what's best practice this? thanks!

according mongodb documentation:

field names strings.

so can't use objectid's keys, can use string representation:

var playersobj = {}; playersobj[objectid()] = { entry : 'foo' }; // stringify objectid  var document = {   _id     : objectid(),   players : playersobj };

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