PTB-be/model/dokumen.model.js

const mongoose = require('mongoose')
const { Schema, Types } = mongoose
const chunk = require('./chunk.model')

module.exports = mongoose.model(
  'dokumen',
  new Schema({
    chunk: { type: Types.ObjectId, ref: chunk },
    judul: String,
    path: String,
    type: String,
  }),
  'dokumen'
)