Scenario - get initialValues

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after mongo integration

• 66

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defaultValues in RHF supports async https://www.react-hook-form.com/api/useform/#defaultValues Seems like it can be implemented with Server Action passed to defaultValues

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Client components support of fetch is limited - can be done with with useEffect(not recommended) or 3-rd party libraries like SWR https://github.com/vercel/next.js/discussions/58896#discussioncomment-7851667

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.lean() .toObject() used to convert received doc to object https://stackoverflow.com/questions/7503450/how-do-you-turn-a-mongoose-document-into-a-plain-object

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The mongoose search returns mongoose doc and this is pain in the ass to convert it to plain object

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I have documents in modgoDb with nested structure, like so:

{
  date: unixdate
  users: [
    {
      name: John,
      age: 35
      hobbies: [
        {hobby: tennis, skill: beginner}
      ]
    }
  ]  
}

I want to get the latest document and extract an array of users from it.

const latestRecord = await Record.find()
      .sort({ createdAt: -1 })
      .limit(1)
      .exec();
const users = latestRecord[0].users;

The problem is, the resulting users contains some crap from mongoose(or mongoDb), like _id field inside each object (inside each user and hobby). Also i can perform .map on resulting user array. IDK why, but i got some broken output, probably because of that _id field which contains new Object declaration.

The task is - to get a plain object from mongoose .find

Available several methods:

1) Exclude _id and __v within .find Record.find({}, { _id: 0, __v: 0 }) not working because it excludes only top-level _id, leaving that field inside my users and hobbies arrays.

2) Make plain id's with toObject latestRecord.toObject({flattenObjectIds:true, versionKey:false}) working, but it requires me to manually perform nested loops throw result to remove all the _id fields

3) Use transform. Transform can be used per document or per model.

const institutionsList = latestRecord[0].toObject({
      transform: function (doc, ret) {
        delete ret._id; // removing all _id (even nested)
      },
    });

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transform function treats every object in the document as an embedded doc, so

transform: function (doc, ret) {
        delete ret._id;
        ret = { ...ret, isDeleted: false }; // will add field in each object. i.e. in `institution` as well as in `asset`
        return ret;
      },

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Transform is a tricky one: if applied to a schema, it processes only a top-level document. If applied to doc, it applies to each sub-doc docs

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Implemented base functionality. Remaining

• Loading state for record form #73

• 58 () if no initial values

• Error UI state if fetching error #72

some example of error handling https://stackoverflow.com/questions/76269170/cant-access-values-from-next-server-actions-next-js-13-4