Node/Express + MySQL: Inserts not displaying instantly - mysql

Question

I have a form called #add_blog_post with the action "/mysql_test/add_blog_post" and method of "POST"
Jade markup:
form#add_blog_post(action="/mysql_test/add_blog_post" method="POST")
This form executes the following code in my app.js:
app.post('/mysql_test/add_blog_post', function(req, res) {
var author = req.body.author;
var date = req.body.date;
var title = req.body.title;
var body = req.body.body;
var blog_insert_query = "insert into 332project.blog(author,date,title,body) values(";
blog_insert_query += ("'"+author+"'"+","); blog_insert_query += ("'"+date+"'"+","); blog_insert_query += ("'"+title+"'"+","); blog_insert_query += ("'"+body+"'"+")");
var connection = mysql.createConnection({
host: process.env.DB_HOST,
user: process.env.DB_USER,
password: process.env.DB_PASS
});
connection.connect(function(err) { /*error?*/ });
var result;
var query = connection.query(blog_insert_query, function(err, result) {
res.redirect('/mysql_test');
});
});
The blog post insert works just fine but the website takes a while for the insert to be displayed from the select statement on /mysql_test.
Here is my route:
var express = require('express');
var router = express.Router();
var db_calls = require('../db.js');
var connection = db_calls.connect();
connection.connect(function(err) { /*error?*/ });
var result;
var query = connection.query("select * from 332project.blog order by id desc", function(err, rows, fields) {
connection.end();
if (!err) {
result = rows;
}
});
router.get('/', function(req, res, next) {
res.render('mysql_test', {
result: result
});
});
module.exports = router;
What gives? It almost seems like a caching issue. I'd really like for my create/update operations to be instantly visible in my application.
Source code: https://github.com/harwoodjp/learning-express

Answer 1

Your problem is probably that you're not calling connection.end() per the docs.