I am having an issue with trying to save data parsed from the browser to my mongodb database it would be great if someone could explain to me why I am getting the error I am and how to fix it, thanks.
App.js:
var print = require('./print');
var port = 1338;
var express = require("express");
var app = express();
var bodyParser = require('body-parser');
var mongodb = require('mongodb');
var MongoClient = mongodb.MongoClient;
var url = 'mongodb://localhost:1337/testdb';
MongoClient.connect(url, function(err, db) {
var collection = db.collection('users');
if (err) {
console.log('Unable to connect to the mongoDB server. Error:', err);
} else {
console.log('Connection established to', url);
}
app.use(bodyParser.urlencoded({ extended: true }));
app.set('view engine', 'ejs');
app.get('/', function(req, res) {
res.render("post");
print("All is in order");
})
var collection = db.collection('users');
var name = app.post('/post', function(req, res) {
res.send('You sent the name "' + req.body.name + '".');
var name = req.body.name
var user1 = { "username": name };
collection.insert(user1, function(err, result) {
if (err) {
console.log(err);
} else {
console.log('Inserted %d documents into the "users" collection. The documents inserted with "_id" are:', result.length, result);
}
})
});
app.listen(port, function() {
print(`listening on ${port}`);
})
db.close();
})
Post.ejs:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>CSS3 Contact Form</title>
</head>
<body>
<div id="contact">
<h1>Send an email</h1>
<form action="http://127.0.0.1:1338/post" method="post">
<fieldset>
<label for="name">Name:</label>
<input type="text" id="name" name="name" placeholder="Enter your full name" />
<label for="email">Email:</label>
<input type="email" id="email" placeholder="Enter your email address" />
<label for="message">Message:</label>
<textarea id="message" placeholder="What's on your mind?"></textarea>
<input type="submit" value="Send message" />
</fieldset>
</form>
</div>
</body>
</html>
Error:
{ MongoError: server instance pool was destroyed
at Function.MongoError.create (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb-core\lib\error.js:29:11)
at basicWriteValidations (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb-core\lib\topologies\server.js:446:51)
at Server.insert (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb-core\lib\topologies\server.js:532:16)
at Server.insert (C:\Users\Programming\Documents\Web_Repo\\node_modules\mongodb\lib\server.js:383:17)
at executeCommands (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb\lib\bulk\ordered.js:455:23)
at OrderedBulkOperation.execute (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb\lib\bulk\ordered.js:508:10)
at bulkWrite (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb\lib\collection.js:652:8)
at Collection.insertMany (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb\lib\collection.js:522:44)
at Collection.insert (C:\Users\Programming\Documents\Web_Repo\node_modules\mongodb\lib\collection.js:824:15)
at C:\Users\Programming\Documents\Web_Repo\app.js:36:18
name: 'MongoError',
message: 'server instance pool was destroyed' }
Looks like Mukesh already told you the solution but like he mentioned your code structure can be improved.
So here's how I would do it,
Config file ~config.js
main file