db.py 文件源码

def load(self):
        try:
            s = Session.objects.get(
                session_key=self.session_key,
                expire_date__gt=timezone.now()
            )
            self.user_id = s.user_id
            # do not overwrite user_agent/ip, as those might have been updated
            if self.user_agent != s.user_agent or self.ip != s.ip:
                self.modified = True
            return self.decode(s.session_data)
        except (Session.DoesNotExist, SuspiciousOperation) as e:
            if isinstance(e, SuspiciousOperation):
                logger = logging.getLogger('django.security.%s' %
                                           e.__class__.__name__)
                logger.warning(force_text(e))
            self.create()
            return {}