Paginasi di nodejs dengan mysql

Anda dapat mencoba sesuatu seperti itu (dengan asumsi Anda menggunakan Express 4.x).

Gunakan parameter GET (di sini halaman adalah jumlah hasil halaman yang Anda inginkan, dan npp adalah jumlah hasil per halaman).

Dalam contoh ini, hasil kueri ditetapkan dalam results bidang payload respons, sementara metadata pagination diatur di pagination lapangan.

Adapun kemungkinan untuk query berdasarkan hasil pencarian saat ini, Anda harus memperluas sedikit, karena pertanyaan Anda agak tidak jelas.

var express = require('express');
var mysql   = require('mysql');
var Promise = require('bluebird');
var bodyParser = require('body-parser');
var app = express();

var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'myuser',
  password : 'mypassword',
  database : 'wordpress_test'
});
var queryAsync = Promise.promisify(connection.query.bind(connection));
connection.connect();

// do something when app is closing
// see http://stackoverflow.com/questions/14031763/doing-a-cleanup-action-just-before-node-js-exits
process.stdin.resume()
process.on('exit', exitHandler.bind(null, { shutdownDb: true } ));

app.use(bodyParser.urlencoded({ extended: true }));

app.get('/', function (req, res) {
  var numRows;
  var queryPagination;
  var numPerPage = parseInt(req.query.npp, 10) || 1;
  var page = parseInt(req.query.page, 10) || 0;
  var numPages;
  var skip = page * numPerPage;
  // Here we compute the LIMIT parameter for MySQL query
  var limit = skip + ',' + numPerPage;
  queryAsync('SELECT count(*) as numRows FROM wp_posts')
  .then(function(results) {
    numRows = results[0].numRows;
    numPages = Math.ceil(numRows / numPerPage);
    console.log('number of pages:', numPages);
  })
  .then(() => queryAsync('SELECT * FROM wp_posts ORDER BY ID DESC LIMIT ' + limit))
  .then(function(results) {
    var responsePayload = {
      results: results
    };
    if (page < numPages) {
      responsePayload.pagination = {
        current: page,
        perPage: numPerPage,
        previous: page > 0 ? page - 1 : undefined,
        next: page < numPages - 1 ? page + 1 : undefined
      }
    }
    else responsePayload.pagination = {
      err: 'queried page ' + page + ' is >= to maximum page number ' + numPages
    }
    res.json(responsePayload);
  })
  .catch(function(err) {
    console.error(err);
    res.json({ err: err });
  });
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

function exitHandler(options, err) {
  if (options.shutdownDb) {
    console.log('shutdown mysql connection');
    connection.end();
  }
  if (err) console.log(err.stack);
  if (options.exit) process.exit();
}

Berikut adalah package.json file untuk contoh ini:

{
  "name": "stackoverflow-pagination",
  "dependencies": {
    "bluebird": "^3.3.3",
    "body-parser": "^1.15.0",
    "express": "^4.13.4",
    "mysql": "^2.10.2"
  }
}