44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
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# see http://code.djangoproject.com/ticket/3777
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from django import http
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class FilterPersistMiddleware(object):
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def process_request(self, request):
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if request.method != 'GET':
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return None
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path = request.path
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if path.find('/admin/') != -1: # Dont waste time if we are not in admin
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query_string = request.META['QUERY_STRING']
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key = 'key' + path.replace('/','_')
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if not request.META.has_key('HTTP_REFERER'):
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return None
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if query_string: # Don't modify but save new queries
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request.session[key] = query_string
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return None
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session = request.session
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if session.get('redirected', False): # so that we dont loop once redirected
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del session['redirected']
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return None
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referrer = request.META['HTTP_REFERER'].split('?')[0]
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referrer = referrer[referrer.find('/admin'):len(referrer)]
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if path == referrer: # We are in same page as before
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if query_string == '': # Filter is empty, delete it
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if session.get(key,False):
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del session[key]
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return None
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request.session[key] = query_string
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else: # We are are coming from another page, restore filter if available
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if session.get(key, False):
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query_string=request.session.get(key)
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redirect_to = path+'?'+query_string
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request.session['redirected'] = True
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return http.HttpResponseRedirect(redirect_to)
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else:
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return None
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else:
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return None
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