mybuddy/babybuddy/middleware.py

50 lines
1.6 KiB
Python

import time
import pytz
from django.conf import settings
from django.utils import timezone
class UserTimezoneMiddleware:
"""
Sets the timezone based on a user specific setting that falls back on
`settings.TIME_ZONE`. This middleware must run after
`django.contrib.auth.middleware.AuthenticationMiddleware` because it uses
the request.user object.
"""
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
user = request.user
if hasattr(user, 'settings') and user.settings.timezone:
try:
timezone.activate(pytz.timezone(user.settings.timezone))
except pytz.UnknownTimeZoneError:
pass
return self.get_response(request)
class RollingSessionMiddleware:
"""
Periodically resets the session expiry for existing sessions.
"""
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if request.session.keys():
session_refresh = request.session.get('session_refresh')
if session_refresh:
try:
delta = int(time.time()) - session_refresh
except (ValueError, TypeError):
delta = settings.ROLLING_SESSION_REFRESH + 1
if delta > settings.ROLLING_SESSION_REFRESH:
request.session['session_refresh'] = int(time.time())
request.session.set_expiry(settings.SESSION_COOKIE_AGE)
else:
request.session['session_refresh'] = int(time.time())
return self.get_response(request)