Node.js: CouchDB のデータを更新 (Update)

couch_update.js

#! /usr/bin/node
// ---------------------------------------------------------------
//  couch_update.js
//
//                  Jul/27/2020
// ---------------------------------------------------------------
var Client = require('node-rest-client').Client
// ---------------------------------------------------------------
function get_current_date_proc()
{
    const today = new Date ()
    var ddx = (1900 + today.getYear ()) + "-" + (today.getMonth () +1)
    ddx += "-" + today.getDate ()

    return ddx
}

// ---------------------------------------------------------------
console.error("*** 開始 ***")

const key_in=process.argv[2]
const population_in=process.argv[3]

console.log(key_in)
console.log(population_in)

const url = "http://localhost:5984/nagano/" + key_in

var client = new Client()
client.get(url, function(data, response) {
    console.log(data)
    console.log(data._rev)
    console.log(data.name)

    const date_mod = get_current_date_proc()
    console.log(date_mod)

    var unit_aa = new Object ()
    unit_aa["population"] = population_in
    unit_aa["name"] = data.name
    unit_aa["date_mod"] = date_mod
    const json_str = JSON.stringify (unit_aa)
    console.log(json_str)

    const url_put = url + '?rev=' + data._rev

    var args = {
        data: json_str,
        headers: { "Content-Type": "application/json" }
        }

    client.put(url_put, args, function(data, response) {
        console.log(data)
        console.error("*** 終了 ***")
        })

    })

// ---------------------------------------------------------------

実行

export NODE_PATH=/usr/lib/node_modules
./couch_update.js t2023 9345100