Development with Python

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The first thing I did was take a look at an existing Django-Persona integration called
but unfortunately it didn’t really support Python 3. I’m sure it will
by the time you read this, but I was quietly relieved since I was rather looking forward
to writing my own code for this!
It took me about three hours of hacking about, using a combination of code stolen from
Dan’s talk and the example code on the , but by the end I had something
which just about works. I’ll take you on a tour, and then we’ll go through and “de-spike”
the implementation.
You should go ahead and add this code to your own site too, and then you can have a
play with it, try logging in with your own email address, and convince yourself that it
really does work.
Starting a Branch for the Spike
Before embarking on a spike, it’s a good idea to start a new branch, so you can still use
your VCS without worrying about your spike commits getting mixed up with your
production code:
$ git checkout -b persona-spike
Frontend and JavaScript Code
Let’s start with the frontend. I was able to cut and paste code from the Persona site and
Dan’s slides with minimal modification:
lists/templates/base.html (ch15l001).
<script src= "></script>
<script src= "/static/list.js"></script>
<script src= "></script>
<script>
$(document).ready(function() {
var loginLink = document. getElementById('login');
if (loginLink) {
loginLink.onclick = function() { navigator.id.request(); };
}
var logoutLink = document.getElementById('logout');
if (logoutLink) {
logoutLink.onclick = function() { navigator.id. logout(); };
}
var currentUser = '{{ user.email }}' || null ;
var csrf_token = '{{ csrf_token }}' ;
console.log (currentUser);
navigator.id.watch({
loggedInUser: currentUser ,
onlogin: function(assertion) {
$.post('/accounts/login', {assertion: assertion, csrfmiddlewaretoken: csrf_token})
.done(function() { window.location.reload(); })
Exploratory Coding, aka “Spiking” | 243