CSRF Protection and the POST Flow
Handle the GET/POST submit cycle securely.
CSRF Protection and the POST Flow is a free Django Academy lesson on CoddyKit — lesson 4 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Django Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
What CSRF Is
CSRF tricks a logged-in user into submitting a hidden request. Django blocks it so attackers cannot act on a user's behalf. 🔒
Protection Is On
Django enables CsrfViewMiddleware by default, so every unprotected POST is rejected until you add the right token.
The csrf_token Tag
Add {% csrf_token %} inside every POST form. It injects a hidden field with a per-session secret token.
<form method="post">
{% csrf_token %}
</form>Why It Works
The token proves the request came from your own page. A forged form on another site cannot guess it, so the POST fails.
GET Shows the Form
A GET request displays a blank, unbound form so the user can start typing their input.
if request.method == "GET":
form = ContactForm()POST Submits the Data
A POST sends the filled values back. You bind them to the form and run validation before doing anything.
if request.method == "POST":
form = ContactForm(request.POST)Validate Then Act
If the bound form is_valid(), process cleaned_data: save it, send an email, or whatever the form is for.
if form.is_valid():
save(form.cleaned_data)Redirect After Success
On success, redirect to a new URL. This Post/Redirect/Get pattern stops a refresh from resubmitting the data.
return redirect("thanks")Re-render on Errors
If validation fails, re-render the same template with the bound form. It still holds the input and shows each error.
return render(request, "contact.html",
{"form": form})The Full Pattern
This GET-to-show, POST-to-process shape is the standard form view. One view handles both methods cleanly.
form = ContactForm(request.POST or None)
if form.is_valid():
return redirect("thanks")Mind AJAX Requests
JavaScript POSTs must send the token in the X-CSRFToken header, read from the csrftoken cookie, or Django rejects them.
Quick Check
Check your CSRF and POST knowledge.
Recap
Add csrf_token to every POST form. GET shows the form, POST validates it, then redirect on success or re-render on errors. ✅
Frequently asked questions
Is the “CSRF Protection and the POST Flow” lesson free?
Yes — the full text of “CSRF Protection and the POST Flow” is free to read here on the web, and the Django Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Django Academy course, upgrade to CoddyKit PRO.
What will I learn in “CSRF Protection and the POST Flow”?
Handle the GET/POST submit cycle securely. You practise Django Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Django Academy?
No prior experience is required. Django Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 4 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “CSRF Protection and the POST Flow” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Django Academy lesson?
Yes. Every Django Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Defining a forms.Form
- is_valid and cleaned_data
- Rendering Forms in Templates
- CSRF Protection and the POST Flow