id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 16568,require_debug_false does not work as intended (backward incompatible),Andreas Pelme,nobody,"Snip from django/conf/global_settings.py: {{{ LOGGING = { ... 'filters': { 'require_debug_false': { '()': 'django.utils.log.CallbackFilter', 'callback': lambda r: not DEBUG } }, ... } }}} This does not work as intended. The callback uses the DEBUG setting that is defined in the same file -- django/conf/global_settings.py -- not in the project setting file. This configuration works when used in a project settings file - but not in the global one. The result is that callback will always return True, since DEBUG is ""always"" False in global_settings.py. I hit this problem by not having defined LOGGING in my project settings file (since I just want everything to keep working the way it's been before). The trivial work-around is to copy/paste this into my project settings file. Steps to reproduce: * Create a fresh project * Remove LOGGING from the generated settings.py file (to simulate an old project where LOGGING is not added) * Define ADMINS * Make sure DEBUG = True * Trigger an internal error * An email 500 is sent to ADMINS I see a couple of ways to solve this: 1. Remove require_debug_false from global_settings.py (since it does not work) and force everyone to copy/paste the default LOGGING snippet to their settings 2. Fix the callback function to read the actual settings instead of global_settings, for instance like this: {{{ def _require_debug_false(request): from django.conf import settings return not settings.DEBUG LOGGING = { .... 'filters': { 'require_debug_false': { '()': 'django.utils.log.CallbackFilter', 'callback': _require_debug_false } }, .... } }}} I would provide a proper patch, but I have no idea for how to provide a valid test case for this.",Bug,closed,Core (Other),dev,Release blocker,fixed,,djangoproject.com@… kulala.venu@…,Accepted,1,0,0,0,0,0