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"""
This custom Session model adds an extra column to store an account ID. In
real-world applications, it gives you the option of querying the database for
all active sessions for a particular account.
"""
from django.contrib.sessions.backends.db import SessionStore as DBStore
from django.contrib.sessions.base_session import AbstractBaseSession
from django.db import models
class CustomSession(AbstractBaseSession):
"""
A session model with a column for an account ID.
"""
account_id = models.IntegerField(null=True, db_index=True)
class Meta:
app_label = 'sessions'
@classmethod
def get_session_store_class(cls):
return SessionStore
class SessionStore(DBStore):
"""
A database session store, that handles updating the account ID column
inside the custom session model.
"""
@classmethod
def get_model_class(cls):
return CustomSession
def create_model_instance(self, data):
obj = super(SessionStore, self).create_model_instance(data)
try:
account_id = int(data.get('_auth_user_id'))
except (ValueError, TypeError):
account_id = None
obj.account_id = account_id
return obj
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