I am trying to track the number of times a button or a dropdown is clicked in my flask app and send it back to python backend so i can input into database. I keep getting null for my value i cant seem to figure it out.
new.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<form method = "POST">
<button type="button" id = "numberclicks" name = "numberclicks" onClick="onClick()">Click me</button>
<p>Clicks: <a id="clicks" name ="clicks" placeholder = 0 >{{clicks|safe}}</a></p>
<button type="submit">Login</button>
</form>
</div>
<script>
var clicks = 0;
function onClick() {
clicks += 1;
document.getElementById("clicks").innerHTML = clicks;
console.log(clicks)
}
</script>
</body>
</html>
app.py
from flask import Flask,render_template,request
import json
app = Flask(__name__)
# turn this into calss and import to record who is logged in to the session aka. user then take log data and make relationship to tables
# HOW MANY TIMES USER VISITED THE VISIT PAGE!!!
@app.route('/', methods=['POST', 'GET'])
def signUpUser():
if request.method == "POST":
click = request.args.get('clicks',type = int)
return json.dumps({'status':'OK','click':click})
return render_template("new.html")
if __name__ == "__main__":
app.run(debug=True)
You could use the XMLHttpRequest object to send the clicks count asychronously to the flask backend.
const xhr = new XMLHttpRequest();
xhr.open("POST", "/", true);
xhr.onload = () => {
if (xhr.status === 200) {
...do whatever you want...
}
}
const data = new FormData();
data.append("clicks", clicks);
xhr.send(data);
function onClick() {
clicks += 1;
document.getElementById("clicks").innerHTML = clicks;
console.log(clicks);
fetch("/", {
headers: {
Accept: "application/json",
"Content-Type": "application/json",
},
method: "POST",
body: JSON.stringify({clicks}),
});
}