code: def filter(self, record):
          
          request = get_request()
          if request:
              user = getattr(request, 'user', None)
              if user and not user.is_anonymous():
                  record.username = user.username
              else:
                  record.username = '-'
              meta = getattr(request, 'META', {})
              record.remote_addr = meta.get('REMOTE_ADDR', '-')
              record.http_user_agent = meta.get('HTTP_USER_AGENT', '-')
              if not hasattr(record, 'request'):
                  record.request = request
          else:
              record.username = '-'
              record.remote_addr = '-'
              record.http_user_agent = '-'
          return True
docs: Adds user and remote_addr to the record.