ptb-be/middleware/uploadFile.js

const multer = require('multer')
const storage = multer.memoryStorage()

const handleDokumen = multer({
  storage,
  limits: {
    fileSize: 15 * 1024 * 1024
  }
})

exports.single = (name) => [
  handleDokumen.single(name),
  (req, res, next) => {
    req.body[name] = req.file
    return next()
  }
]

exports.array = (name, maxCount) => [
  handleDokumen.array(name, maxCount),
  (req, res, next) => {
    req.body[name] = req.files
    return next()
  }
]

exports.fields = (data) => [
  handleDokumen.fields(data),
  (req, res, next) => {
    data.forEach((e) => {
      req.body[e.name] = req.files[e.name]
    })
    return next()
  }
]