django-facebook-auth

A stable Facebook authentication backend for Django >= 1.4.

Requires Celery for background token operations.

Installation

Package

django-facebook-auth can be installed as a normal Python package.

Example instalation for pip:

$ pip install django-facebook-auth

Configuration

Celery

This project requires working Celery integration. In case you are new to Celery, the First steps with Django tutorial will help you to hit the ground running.

settings.py

Set USE_TZ = True

Add facebook_auth to INSTALLED_APPS:

INSTALLED_APPS = (
    ...
    'facebook_auth',
    ...
)

Add authentication backends to AUTHENTICATION_BACKENDS:

AUTHENTICATION_BACKENDS = (
    ...
    'facebook_auth.backends.FacebookBackend',
    'facebook_auth.backends.FacebookJavascriptBackend',
    ...
)

Set necessary Facebook properties:

FACEBOOK_CANVAS_URL = 'http://pozytywnie.pl/'  # root of your domain
FACEBOOK_APP_ID = '1234567890'
FACEBOOK_APP_SECRET = '91162629d258a876ee994e9233b2ad87'

Usage

The authentication flow is very straightforward:

Redirect your user to Facebook OAuth endpoint using redirect_uri prepared with the help of this library.

First in your view or context processor prepare the necessary parameters for the Facebook OAuth endpoint:

from facebook_auth.urls import redirect_uri

def login(request):
    ...
    context.update({
        'redirect_uri': redirect_uri('/login/success', '/login/fail'),
        'client_id': settings.FACEBOOK_APP_ID,
        'scope': 'email'
    })
    ...

And embed the link in your template:

<a href="https://www.facebook.com/dialog/oauth?client_id={{ client_id }}&amp;scope={{ scope }}&amp;redirect_uri={{ redirect_uri }}">Login using Facebook</a>

User is redirected back to django-facebook-auth authentication handler, which either authenticates the user or refuses to do so.

Prepare a separate view for each scenario.
A best token for authenticated user is negotiated with Facebook in the background, using your Celery worker.