Add docs, fix bug where LOGIN_REDIRECT_URL always used (#293)

docs/quickstart.rst

@@ -154,6 +154,11 @@ your project, and specifying one additional setting:
     Optional. If this is `True`, your users will automatically log in when they
     click on the activation link in their email. Defaults to `False`.
 
+``ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS``
+    Optional. If this is `True`, your users will automatically be
+    redirected to ``LOGIN_REDIRECT_URL`` when trying to access the
+    ``RegistrationView``. Defaults to `True`.
+
 For example, you might have something like the following in your
 Django settings file::
 

registration/views.py

@@ -16,7 +16,8 @@
 REGISTRATION_FORM_PATH = getattr(settings, 'REGISTRATION_FORM',
                                  'registration.forms.RegistrationForm')
 REGISTRATION_FORM = import_string(REGISTRATION_FORM_PATH)
-ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS = getattr(settings, 'ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS', True)
+ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS = getattr(
+    settings, 'ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS', True)
 
 
 class RegistrationView(FormView):
@@ -42,10 +43,11 @@ def dispatch(self, request, *args, **kwargs):
                 if settings.LOGIN_REDIRECT_URL is not None:
                     return redirect(settings.LOGIN_REDIRECT_URL)
                 else:
-                    raise Exception("You must set a URL with LOGIN_REDIRECT_URL in settings.py or set ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS=False")
+                    raise Exception((
+                        'You must set a URL with LOGIN_REDIRECT_URL in '
+                        'settings.py or set '
+                        'ACCOUNT_AUTHENTICATED_REGISTRATION_REDIRECTS=False'))
 
-        if self.request.user.is_authenticated():
-            return redirect(settings.LOGIN_REDIRECT_URL)
         if not self.registration_allowed():
             return redirect(self.disallowed_url)
         return super(RegistrationView, self).dispatch(request, *args, **kwargs)