Removed getSurveyResponseFromPost from Surveys helper.
We will use the power of Django Forms instead of getting our own properties. This fits better into the rest of Melange which also uses this approach.
from django.contrib.sessions.backends.base import SessionBase, CreateError
from django.core.cache import cache
class SessionStore(SessionBase):
"""
A cache-based session store.
"""
def __init__(self, session_key=None):
self._cache = cache
super(SessionStore, self).__init__(session_key)
def load(self):
session_data = self._cache.get(self.session_key)
if session_data is not None:
return session_data
self.create()
return {}
def create(self):
# Because a cache can fail silently (e.g. memcache), we don't know if
# we are failing to create a new session because of a key collision or
# because the cache is missing. So we try for a (large) number of times
# and then raise an exception. That's the risk you shoulder if using
# cache backing.
for i in xrange(10000):
self.session_key = self._get_new_session_key()
try:
self.save(must_create=True)
except CreateError:
continue
self.modified = True
return
raise RuntimeError("Unable to create a new session key.")
def save(self, must_create=False):
if must_create:
func = self._cache.add
else:
func = self._cache.set
result = func(self.session_key, self._get_session(no_load=must_create),
self.get_expiry_age())
if must_create and not result:
raise CreateError
def exists(self, session_key):
if self._cache.get(session_key):
return True
return False
def delete(self, session_key=None):
if session_key is None:
if self._session_key is None:
return
session_key = self._session_key
self._cache.delete(session_key)