So iI followed a tutorial which has taught me some things about nodejs and mongodb. I now know how to insert new data from the server in to my database.
But what I can’t seem to figure out is how to update existing data in a collection. I have searched on a lot of places but sadly no clear answer for me. I am a little of a noob still with this so excuse me if i say things that are probably wrong.
So this is what I’ve tried to set up:
Code from my Controller.js:
app.get("/button", function(req, res) {
mongo.connect(url_monitor, function (err, db) {
assert.equal(null, err);
db.numbers.update({ $inc: { number: -2}})
getData(res);
})
})
}
I am using the MVC model that has the: controller, model and view. So all pages in the view folder are .ejs files. II am also using Query and ajax to send a request to the controller.
button.js:
$(document).ready(function(){
$('#btn1').on('click', function(){
var number = {number: 0}
$.ajax({
type: 'GET',
url: '/button',
data: number,
success: function(number){
//do something with the data via front-end framework
location.reload();
alert('It works')
}
});
});
})
button.ejs:
<!DOCTYPE html>
<html lang="en">
<head>
<script
src="https://code.jquery.com/jquery-3.5.1.min.js"
integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
crossorigin="anonymous"></script>
<script src="/assets/button.js"></script>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Todo List</title>
<link href="/assets/styles.css" rel="stylesheet" type="text/css">
</head>
<body>
<h1>Button test</h1>
<button id="btn1">Increase number</button>
</body>
</html>
So basically what I am trying to achieve is that once I press a button somewhere on a page, it would increase/decrease a value in the database in one of the specific collections. I am kinda lost with this, any help would be appreciated