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Django Middleware to redirect to a root domain
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| import re | |
| from django import http | |
| from django.utils import six | |
| from django.utils.http import urlquote | |
| WWW_PATTERN = re.compile(r"www\.") | |
| class RootDomainRedirectMiddleware(object): | |
| """ | |
| Inspired by Django"s CommonMiddleware, performs the opposite of | |
| PREPEND_WWW by stripping www from the front of a host | |
| """ | |
| response_redirect_class = http.HttpResponsePermanentRedirect | |
| def process_request(self, request): | |
| """ | |
| Remove WWW from the hostname | |
| """ | |
| host = request.get_host() | |
| old_url = [host, request.path] | |
| new_url = old_url[:] | |
| if (old_url[0] and re.match(WWW_PATTERN, old_url[0])): | |
| new_url[0] = re.sub(WWW_PATTERN, "", old_url[0]) | |
| if new_url == old_url: | |
| # No redirects required. | |
| return | |
| if new_url[0]: | |
| newurl = "%s://%s%s" % ( | |
| request.scheme, | |
| new_url[0], urlquote(new_url[1])) | |
| else: | |
| newurl = urlquote(new_url[1]) | |
| if request.META.get("QUERY_STRING", ""): | |
| if six.PY3: | |
| newurl += "?" + request.META["QUERY_STRING"] | |
| else: | |
| # `query_string` is a bytestring. Appending it to the unicode | |
| # string `newurl` will fail if it isn"t ASCII-only. This isn"t | |
| # allowed; only broken software generates such query strings. | |
| # Better drop the invalid query string than crash (#15152). | |
| try: | |
| newurl += "?" + request.META["QUERY_STRING"].decode() | |
| except UnicodeDecodeError: | |
| pass | |
| return self.response_redirect_class(newurl) |
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