django ssl decorator

I recently found myself needing a way to require some django views be accessed only via a secure channel, as in ssl. A quick search led me to this post. I was able to quickly get up and running with this snippet and a couple of standard view functions, but ran into problems when trying to decorate a FormWizard view. The problem lied in the fact that FormWizards are implemented as classes with overridden __call__ methods. Long story short, I reworked the decorator as a class to work with functions and classes implementing __call__.

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try:   from functools import update_wrapper except ImportError:   from django.utils.functional import update_wrapper   class ssl_required(object):   '''Decorator class to force ssl'''   def __init__(self, func):     self.func = func     update_wrapper(self, func)     def __get__(self, obj, cls=None):     func = self.func.__get__(obj, cls)     return ssl_required(func)     def __call__(self, req, *args, **kwargs):     if req.is_secure() or \         not getattr(settings, 'HTTPS_SUPPORT', True):       return self.func(req, *args, **kwargs)     url = req.build_absolute_uri(req.get_full_path())     url = url.replace('http://', 'https://')     return HttpResponseRedirect(url)