def authenticate(self, token=None, request=None):
""" Reads in a Facebook code and asks Facebook if it's valid and what
user it points to. """
args = {
'client_id': settings.FACEBOOK_APP_ID,
'client_secret': settings.FACEBOOK_APP_SECRET,
'redirect_uri': request.build_absolute_uri(
reverse('facebook-callback')),
'code': token,
}
# Get a legit access token
target = urllib.urlopen(
'https://graph.facebook.com/oauth/access_token?'
+ urllib.urlencode(args)).read()
response = cgi.parse_qs(target)
access_token = response['access_token'][-1]
# Read the user's profile information
fb_profile = urllib.urlopen(
'https://graph.facebook.com/me?access_token=%s' % access_token)
fb_profile = json.load(fb_profile)
try:
# Try and find existing user
fb_user = FacebookProfile.objects.get(facebook_id=fb_profile['id'])
user = fb_user.user
# Update access_token
fb_user.access_token = access_token
fb_user.save()
except FacebookProfile.DoesNotExist:
# No existing user
if getattr(settings, 'FACEBOOK_FORCE_SIGNUP', False):
# No existing user, use anonymous
user = AnonymousUser()
user.username = username
user.first_name = fb_profile['first_name']
user.last_name = fb_profile['last_name']
fb_user = FacebookProfile(
facebook_id=fb_profile['id'],
access_token=access_token
)
user.facebookprofile = fb_user
else:
# No existing user, create one
user = User.objects.create_user(fb_profile['id'],
fb_profile['email'])
user.first_name = fb_profile['first_name']
user.last_name = fb_profile['last_name']
# with django-primate User has one field called 'name' instead
# of first_name and last_name
user.name = u'%s %s' % (user.first_name, user.last_name)
# in my project user has field city_id with facebook location
user.city_id = fb_profile.get('location', {'id': 0})['id']
user.save()
# Create the FacebookProfile
fb_user = FacebookProfile(user=user,
facebook_id=fb_profile['id'],
access_token=access_token)
fb_user.save()
return user
