django-registration custom registration form (recaptcha field)

I try to add a recaptcha field to my registration form and followed Marcos guide:

http://www.marcofucci.com/tumblelog/26/jul/2009/integrating-recaptcha-with-django/

In my registration app, I have a file "forms.py" which looks like this:

from recaptcha import fields as captcha_fi开发者_开发知识库eld
from registration.forms import RegistrationFormUniqueEmail

class RecaptchaRegistrationForm(RegistrationFormUniqueEmail):
  recaptcha = captcha_field.ReCaptchaField()

and a urls.py which gets included under /accounts by my solution wide urls.py:

from django.conf.urls.defaults import *
from registration.views import register
from forms import RecaptchaRegistrationForm
urlpatterns = patterns('users.views',
                       (r'^$', 'profile'),
                       url(r'^register/$', register, {'form_class': RecaptchaRegistrationForm}, name='registration_register'),
                      )

Now, when I go to /accounts/register/ I get this error message:

Exception Value: register() takes at least 2 non-keyword arguments (1 given)

I have no idea why.

The first non-keyword argument it's asking for is request, which is gets automatically.

The second non-keyword argument, which it isn't getting, is the authentication backend.

To get going quickly you can just use the default backend that comes with django-registration. I can't easily test this myself, but this should do it:

from django.conf.urls.defaults import *
from registration.views import register
from forms import RecaptchaRegistrationForm
from registration.backends.default import DefaultBackend
urlpatterns = patterns('trackerbase.users.views',
                       (r'^$', 'profile'),
                       url(r'^register/$', register, {
                       'backend': DefaultBackend,
                       'form_class': RecaptchaRegistrationForm,
                       }, name='registration_register'),
                       )

Take a look at the file you link to starting at line 95. Reading over that should tell you all you need to know.

You can use recaptcha-client, For step by step procedure you can follow k0001's blog it works out of the box.

'backend' isn't an optional argument. Can you please attach the stack trace of your exception? It seems like it's trying to use DefaultBackend as a string.