app/Middleware/ConvertEmptyStringsToNull.js


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'use strict'

class ConvertEmptyStringsToNull {
  async handle ({ request }, next) {
    if (Object.keys(request.body).length) {
      request.body = Object.assign(
        ...Object.keys(request.body).map(key => ({
          [key]: request.body[key] !== '' ? request.body[key] : null
        }))
      )
    }

    await next()
  }
}

module.exports = ConvertEmptyStringsToNull