Django-registration, force unique e-mail

Question

Can I force users to make unique e-mail addresses in django-registration?

Answer 1

As miku pointed out, you should simply use RegistrationFormUniqueEmail .

If you implement according to the documentation and bug report replies (as of mid-2011), you'll probably end up with an exception like:

TypeError at /accounts/register/
register() takes at least 2 non-keyword arguments (1 given)

your urlconf should look like this to properly specify this backend:

(r'^accounts/register/', 'registration.views.register' {'form_class':RegistrationFormUniqueEmail, 'backend':'registration.backends.default.DefaultBackend' }),
(r'^accounts/', include('registration.backends.default.urls')),

[ please excuse the additional answer, as this belongs as a comment to miku's correct answer; I don't have the privilege of commenting, but this tip may save at least a few people 15 minutes each, so is hopefully worth the forced faux-pas ]