node-express-mongodb-jwt-rest-api-skeleton/app/controllers/cities/updateCity.js

Node.js express.js MongoDB JWT REST API - This is a basic API REST skeleton written on JavaScript using async/await. Great for building a starter web API for your front-end (Android, iOS, Vue, react, angular, or anything that can consume an API)

const City = require('../../models/city')
const { updateItem } = require('../../middleware/db')
const { isIDGood, handleError } = require('../../middleware/utils')
const { matchedData } = require('express-validator')
const { cityExistsExcludingItself } = require('./helpers')

/**
 * Update item function called by route
 * @param {Object} req - request object
 * @param {Object} res - response object
 */
const updateCity = async (req, res) => {
  try {
    req = matchedData(req)
    const id = await isIDGood(req.id)
    const doesCityExists = await cityExistsExcludingItself(id, req.name)
    if (!doesCityExists) {
      res.status(200).json(await updateItem(id, City, req))
    }
  } catch (error) {
    handleError(res, error)
  }
}

module.exports = { updateCity }