def get_preferences_from_cookies(request):
preferences = {}
for field_name, (cookie_name, default_value) in PREFERENCE_FIELDS.items():
value = default_value
cookie_value = request.COOKIES.get(cookie_name, None)
if cookie_value:
try:
value = json.loads(cookie_value)
except ValueError:
pass
preferences[field_name] = value
return preferences
def delete_preference_cookies(response):
for cookie_name, default_value in PREFERENCE_FIELDS.values():
response.delete_cookie(cookie_name)
