django-gandalf
django-gandalf lets you declare multi-step, tree-shaped Django form flows
as readable, composable code.
You build a flow with a small, immutable builder — .step() to add a form,
.branch() to fork on an answer, .expand() to grow steps from an answer —
and mount it as an ordinary Django view. Gandalf handles the per-step URLs,
the session state, back-navigation, editing, file uploads, and running your
completion logic exactly once. When one wizard is not enough, it handles the
task list of wizards too: sections the user does in any order, lists they
grow, sections that unlock or appear because of what they said elsewhere, and
a submit at the end of all of it.
from gandalf.wizard import Wizard, condition
application = (
Wizard()
.step(ApplyingAsForm, name="applying-as")
.branch(
condition(is_organisation, Wizard().step(OrganisationForm, name="organisation")),
default=Wizard().step(AboutYouForm, name="about-you"),
)
.step(EmailForm, name="contact")
)
The only dependency is Django. Requires Python 3.10+ and Django 4.2+.
Installation
pip install django-gandalf # or: uv add django-gandalf
Gandalf ships no models or migrations, but it relies on standard Django
plumbing — the sessions app and middleware, and the request context
processor. Configuration has the exact
settings.
Documentation
The docs are in two halves, and you can start at either.
Learn is a walkthrough: one community grant application, built up a chapter at a time. Each chapter adds one idea, says why it exists, and leaves a runnable application behind. It deliberately does not cover every hook and every edge — read it start to finish the first time.
Reference is one page per thing —
Wizard, WizardViewSet, the summary, task lists, add another, storage, the
driver, the testing helpers — each with the complete API, worked usage, and
troubleshooting. Come here when you know what you are looking for.
| I want to… | Go to |
|---|---|
| build my first wizard | Learn, chapter 1 |
| see every builder method | Reference: Wizard |
| override a viewset hook | Reference: WizardViewSet |
| build a task list of wizards | Learn, chapter 12 · Reference: Task lists |
| test a wizard | Reference: Testing |
migrate from django-formtools |
Coming from formtools |
| know what replaying costs | Reference: Walk costs |
| drive a wizard from a script or an agent | Reference: Driver |
Every Learn chapter is real code under
tests/testapp/readme/, driven end to end by
tests/functional/test_readme_examples.py.
just serve runs them at http://127.0.0.1:8000/ so you can click through.
Contributing
See CONTRIBUTING.md for local setup, the separated unit
and functional test commands, and commit conventions.
ARCHITECTURE.md is the runtime-level view of how the
pieces fit; AGENT_ACCESS.md is the design behind the
driver and the agent.
1 maintainer
Metadata
1 maintainer
Release files for django-gandalf 0.36.0
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