[Django]-Django: redirect subdomain to another url

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The 3rd party apps usually put this functionality into Middleware and use the process_request hook to take care of subdomain recoginition and then perform appropriate redirect.

Example displaying custom middleware and use of process_request from django-subdomains

class SubdomainMiddleware(object):
    """
    A middleware class that adds a ``subdomain`` attribute to the current request.
    """
    def get_domain_for_request(self, request):
        """
        Returns the domain that will be used to identify the subdomain part
        for this request.
        """
        return get_domain()

    def process_request(self, request):
        """
        Adds a ``subdomain`` attribute to the ``request`` parameter.
        """
        domain, host = map(lower,
            (self.get_domain_for_request(request), request.get_host()))

        pattern = r'^(?:(?P<subdomain>.*?)\.)?%s(?::.*)?$' % re.escape(domain)
        matches = re.match(pattern, host)

        if matches:
            request.subdomain = matches.group('subdomain')
        else:
            request.subdomain = None
            logger.warning('The host %s does not belong to the domain %s, '
                'unable to identify the subdomain for this request',
                request.get_host(), domain)
👤dm03514

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