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SizeAndTimeMiddleware

Author:
amitu
Posted:
October 14, 2008
Language:
Python
Version:
1.0
Tags:
middleware
Score:
4 (after 4 ratings)

Used for showing size of the page in human readable format and time taken to generate the page on the server. To use it, in your base template, somewhere put the line: <!-- ____SIZE_AND_DATE_PLACEHOLDER____ -->. May be used on production.

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import time
from django.utils.encoding import smart_unicode
from django.template.defaultfilters import filesizeformat

class SizeAndTimeMiddleware(object):
    def process_request(self, request):
        request._request_start_time = time.time() 

    def process_response(self, request, response):
        if not hasattr(request, "_request_start_time"): return response
        if response['Content-Type'].split(';')[0] in (
            'text/html', 'application/xhtml+xml'
        ):
            response.content = smart_unicode(response.content).replace(
                "<!-- ____SIZE_AND_DATE_PLACEHOLDER____ -->", 
                "(%s, %0.3f seconds)" % (
                    filesizeformat(len(response.content)),
                    time.time() - request._request_start_time,
                )
            )
        return response

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