Django browser detection middleware

django_browser_detection_middleware.py

import re
 
"""
    Detect browser and it's version.
    Now it works only for few moct common browsers. Full list of browsers and
    theire user-agent you can find here: http://www.useragentstring.com/pages/useragentstring.php
 
    Version: 0.1
    Author: Andrey Nikishaev
    Site: http://creotiv.in.ua/
"""
 
class BrowserDetectionMiddleware(object):
 
    def __init__(self):
 
        self.data_browser = [
            {
			    'subString': "Chrome",
			    'identity': "Chrome",
                'versionSearch': "Chrome/"
		    },
		    {
			    'subString': "Apple",
			    'identity': "Safari",
			    'versionSearch': "Version/"
		    },
		    {   # For Netscape >= 9.0
			    'subString': "Navigator",
			    'identity': "Netscape",
                'versionSearch': "Navigator/"
		    },
		    {   # For Netscape 7.0-9.0
			    'subString': "Netscape",
			    'identity': "Netscape",
                'versionSearch': "Netscape/"
		    },
		    {   # For Netscape 6.x
			    'subString': "Netscape6",
			    'identity': "Netscape",
                'versionSearch': "Netscape6/"
		    },
		    {
			    'subString': "Opera Mini",
			    'identity': "Opera Mini",
                'versionSearch': "Opera Mini/"
		    },
		    {
			    'subString': "Opera",
			    'identity': "Opera",
                'versionSearch': "Version/"
		    },
		    {
			    'subString': "Firefox",
			    'identity': "Firefox",
                'versionSearch': "Firefox/"
		    },
		    {
			    'subString': "MSIE",
			    'identity': "Explorer",
			    'versionSearch': "MSIE "
		    },
		    {
			    'subString': "Konqueror",
			    'identity': "Konqueror",
                'versionSearch': "Konqueror/"
		    },
		    {
			    'subString': "SeaMonkey",
			    'identity': "SeaMonkey",
                'versionSearch': "SeaMonkey/"
		    },
		    {
			    'subString': "Gecko",
			    'identity': "Mozilla",
			    'versionSearch': "rv:"
		    },
        ]
 
    def process_request(self, request):
        request.browser_name = None
        request.browser_version = None
        for b in self.data_browser:
            if b['subString'] in request.META['HTTP_USER_AGENT']:
                request.browser_name = b['identity']
                if b.has_key('versionSearch'):
                    f = re.compile(b['versionSearch']+'([0-9\.]+)',re.M)
                    m = f.search(request.META['HTTP_USER_AGENT'])
                    if m:                
                        request.browser_version = m.group(1)
                break;
 
    def process_view(self, request, view_func, view_args, view_kwargs):
        pass
 
    def process_response(self, request, response):
        return response
 
    def process_exception(self, request, exception):
        pass