[patch] TRAC DB flooded with useless entries

[Dirk Stöcker]

My trac database is flooded with lots of useless entries copying the default values. Especially as this is true for anonymous users the database really gets problems due to this. Below is a patch which prevents adding the timeline entries when they equal the defaults. This does not change beaviour of the software, but reduces required space.

The added 'ifs' simply tests if the new values equal the default and prevent storage. If different values are already stored, the default is nevertheless saved.

--- web_ui.py_  2012-01-20 23:30:00.000000000 +0100                                                                                                                                                            
+++ web_ui.py   2012-01-20 23:37:44.000000000 +0100                                                                                                                                                            
@@ -200,8 +200,11 @@                                                                                                                                                                                           
             data['context'] = rss_context                                                                                                                                                                     
             return 'timeline.rss', data, 'application/rss+xml'                                                                                                                                                
         else:                                                                                                                                                                                                 
-            req.session['timeline.daysback'] = daysback                                                                                                                                                       
-            req.session['timeline.authors'] = authors                                                                                                                                                         
+            if(as_int(req.session.get('timeline.daysback',                                                                                                                                                    
+            self.default_daysback), None) != daysback):                                                                                                                                                       
+                req.session['timeline.daysback'] = daysback                                                                                                                                                   
+            if(req.session.get('timeline.authors', '') != authors):                                                                                                                                           
+                req.session['timeline.authors'] = authors                                                                                                                                                     
             html_context = Context.from_request(req)
             html_context.set_hints(wiki_flavor='oneliner', 
                                    shorten_lines=self.abbreviated_messages)