This is based on a snippet contributed by zbyte64 ( RequireLoginMiddleware) but turned on its head. RequireLoginMiddleware enforces authentication for a subset of urls defined in settings.py. This middleware requires authentication for all urls except those defined in settings.py. The aim is to globally enforce site wide authentication without having to decorate individual views.
To use, add the class to MIDDLEWARE_CLASSES and then define the urls you don't need authentication for. These go in a tuple called PUBLIC_URLS in settings.py. For example:-
PUBLIC_URLS = ( r'project/application/login/', r'project/application/signup/', )
By default, authentication is not required for any urls served statically by Django. If you want to subject these to the same validation, add an entry to settings.py called SERVE_STATIC_TO_PUBLIC with a value of True.
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from django.http import HttpResponseRedirect from django.conf import settings import re class EnforceLoginMiddleware(object): """ Middlware class which requires the user to be authenticated for all urls except those defined in PUBLIC_URLS in settings.py. PUBLIC_URLS should be a tuple of regular expresssions for the urls you want anonymous users to have access to. If PUBLIC_URLS is not defined, it falls back to LOGIN_URL or failing that '/accounts/login/'. Requests for urls not matching PUBLIC_URLS get redirected to LOGIN_URL with next set to original path of the unauthenticted request. Any urls statically served by django are excluded from this check. To enforce the same validation on these set SERVE_STATIC_TO_PUBLIC to False. """ def __init__(self): self.login_url = getattr(settings, 'LOGIN_URL', '/accounts/login/' ) if hasattr(settings,'PUBLIC_URLS'): public_urls = [re.compile(url) for url in settings.PUBLIC_URLS] else: public_urls = [(re.compile("^%s$" % ( self.login_url[1:] )))] if getattr(settings, 'SERVE_STATIC_TO_PUBLIC', True ): root_urlconf = __import__(settings.ROOT_URLCONF) public_urls.extend([ re.compile(url.regex) for url in root_urlconf.urls.urlpatterns if url.__dict__.get('_callback_str') == 'django.views.static.serve' ]) self.public_urls = tuple(public_urls) def process_request(self, request): """ Redirect anonymous users to login_url from non public urls """ try: if request.user.is_anonymous(): for url in self.public_urls: if url.match(request.path[1:]): return None return HttpResponseRedirect("%s?next=%s" % (self.login_url, request.path)) except AttributeError: return HttpResponseRedirect("%s?next=%s" % (self.login_url, request.path))
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