flask signup id example

example.py

from flask import Flask, render_template, redirect, url_for

app = Flask(__name__)

@app.route('index')
def index():
    return render_template('index.html')

@app.route('signup/<signup_id>')
def signup(signup_id=None):
    # other signup stuff, including creating a user
    user.signup_id = signup_id
    # save the user model depending on how it's stored
    return redirect(url_for('index'))