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