def connect(request):
'''
Handles the view logic around connect user
- (if authenticated) connect the user
- login
- register
'''
backend = get_registration_backend()
context = RequestContext(request)
assert context.get('FACEBOOK_APP_ID'), 'Please specify a facebook app id '\
'and ensure the context processor is enabled'
facebook_login = bool(int(request.REQUEST.get('facebook_login', 0)))
if facebook_login:
logger.info('trying to connect using facebook')
graph = require_persistent_graph(request)
if graph:
logger.info('found a graph object')
facebook = FacebookUserConverter(graph)
if facebook.is_authenticated():
logger.info('facebook is authenticated')
facebook_data = facebook.facebook_profile_data()
#either, login register or connect the user
try:
action, user = connect_user(request)
logger.info('Django facebook performed action: %s', action)
except facebook_exceptions.IncompleteProfileError, e:
#show them a registration form to add additional data
warning_format = u'Incomplete profile data encountered with error %s'
warn_message = warning_format % e.message
send_warning(warn_message, e=e,
facebook_data=facebook_data)
context['facebook_mode'] = True
context['form'] = e.form
return render_to_response(
facebook_settings.FACEBOOK_REGISTRATION_TEMPLATE,
context_instance=context,
)
if action is CONNECT_ACTIONS.CONNECT:
#connect means an existing account was attached to facebook
messages.info(request, _("You have connected your account "
"to %s's facebook profile") % facebook_data['name'])
elif action is CONNECT_ACTIONS.REGISTER:
#hook for tying in specific post registration functionality
response = backend.post_registration_redirect(request, user)
#compatability for django registration backends which return tuples instead of a response
#alternatively we could wrap django registration backends, but that would be hard to understand
response = response if isinstance(response, HttpResponse) else redirect(response)
return response
else:
if 'attempt' in request.GET:
return next_redirect(request, next_key=['error_next', 'next'],
additional_params=dict(fb_error_or_cancel=1))
else:
logger.info('Facebook authentication needed for connect, ' \
'raising an error')
raise OpenFacebookException('please authenticate')
#for CONNECT and LOGIN we simple redirect to the next page
return next_redirect(request, default=facebook_settings.FACEBOOK_LOGIN_DEFAULT_REDIRECT)
def _register_user(request, facebook, profile_callback=None,
remove_old_connections=False):
'''
Creates a new user and authenticates
The registration form handles the registration and validation
Other data on the user profile is updates afterwards
if remove_old_connections = True we will disconnect old
profiles from their facebook flow
'''
if not facebook.is_authenticated():
raise ValueError(
'Facebook needs to be authenticated for connect flows')
# get the backend on new registration systems, or none
# if we are on an older version
backend = get_registration_backend()
logger.info('running backend %s for registration', backend)
# gets the form class specified in FACEBOOK_REGISTRATION_FORM
form_class = get_form_class(backend, request)
facebook_data = facebook.facebook_registration_data()
data = request.POST.copy()
for k, v in facebook_data.items():
if not data.get(k):
data[k] = v
if remove_old_connections:
_remove_old_connections(facebook_data['facebook_id'])
if request.REQUEST.get('force_registration_hard'):
data['email'] = data['email'].replace(
'@', '+test%s@' % randint(0, 1000000000))
form = form_class(data=data, files=request.FILES,
initial={'ip': request.META['REMOTE_ADDR']})
if not form.is_valid():
error_message_format = u'Facebook data %s gave error %s'
error_message = error_message_format % (facebook_data, form.errors)
error = facebook_exceptions.IncompleteProfileError(error_message)
error.form = form
raise error
#for new registration systems use the backends methods of saving
new_user = None
if backend:
new_user = backend.register(request, **form.cleaned_data)
#fall back to the form approach
if not new_user:
# For backward compatibility, if django-registration form is used
try:
new_user = form.save(profile_callback=profile_callback)
except TypeError:
new_user = form.save()
signals.facebook_user_registered.send(sender=auth.models.User,
user=new_user, facebook_data=facebook_data)
#update some extra data not yet done by the form
new_user = _update_user(new_user, facebook)
# IS this the correct way for django 1.3? seems to require the backend
# attribute for some reason
new_user.backend = 'greenroom.apps.django_facebook_patched.auth_backends.FacebookBackend'
auth.login(request, new_user)
return new_user