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- """
- This module allows importing AbstractBaseSession even
- when django.contrib.sessions is not in INSTALLED_APPS.
- """
- from __future__ import unicode_literals
-
- from django.db import models
- from django.utils.encoding import python_2_unicode_compatible
- from django.utils.translation import ugettext_lazy as _
-
-
- class BaseSessionManager(models.Manager):
- def encode(self, session_dict):
- """
- Return the given session dictionary serialized and encoded as a string.
- """
- session_store_class = self.model.get_session_store_class()
- return session_store_class().encode(session_dict)
-
- def save(self, session_key, session_dict, expire_date):
- s = self.model(session_key, self.encode(session_dict), expire_date)
- if session_dict:
- s.save()
- else:
- s.delete() # Clear sessions with no data.
- return s
-
-
- @python_2_unicode_compatible
- class AbstractBaseSession(models.Model):
- session_key = models.CharField(_('session key'), max_length=40, primary_key=True)
- session_data = models.TextField(_('session data'))
- expire_date = models.DateTimeField(_('expire date'), db_index=True)
-
- objects = BaseSessionManager()
-
- class Meta:
- abstract = True
- verbose_name = _('session')
- verbose_name_plural = _('sessions')
-
- def __str__(self):
- return self.session_key
-
- @classmethod
- def get_session_store_class(cls):
- raise NotImplementedError
-
- def get_decoded(self):
- session_store_class = self.get_session_store_class()
- return session_store_class().decode(self.session_data)
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