def getConferencesWithWishlistedSessions(self, request):
"""Returns conferences which have sessions the user has wishlisted."""
user = endpoints.get_current_user()
if not user:
raise endpoints.UnauthorizedException('Authorization required')
user_id = getUserId(user)
session_keys = [
wl.sessionKey for wl in SessionWishlistItem.query(
SessionWishlistItem.userId == user_id)]
conf_keys = [ndb.Key(urlsafe=k).parent().urlsafe() for k in session_keys]
conf_counts = {}
for ck in conf_keys:
if ck in conf_counts:
conf_counts[ck] += 1
else:
conf_counts[ck] = 1
confs = []
for (k,v) in sorted(conf_counts.items(), key=operator.itemgetter(1)):
confs.append(ConferenceWithWishlistSession(
conference=self._copyConferenceToForm(
ndb.Key(urlsafe=k).get(), None),
wishlistedSessions=v))
return ConferencesWithWishlistSessionResponse(
conferences=list(reversed(confs))
)
def _createSessionWishlistObject(self, request):
"""Wishlists a session for the current user."""
user = endpoints.get_current_user()
if not user:
raise endpoints.UnauthorizedException('Authorization required')
user_id = getUserId(user)
# check that session exists
sessionKey = ndb.Key(urlsafe=request.sessionKey)
if sessionKey.kind() != "ConferenceSession" or not sessionKey.get():
raise endpoints.NotFoundException(
'No session found with key: %s' % request.sessionKey)
csession = sessionKey.get()
q = SessionWishlistItem.query()
q = q.filter(SessionWishlistItem.userId == user_id)
q = q.filter(SessionWishlistItem.sessionKey == request.sessionKey)
# if session has already been wishlisted by this user, simply return
# success
if q.count() > 0:
return BooleanMessage(data=True)
wlItem = SessionWishlistItem()
wlItem.userId = user_id
wlItem.sessionKey = request.sessionKey
wlItem.put()
return BooleanMessage(data=True)
def addSessionToWishlist(self, request):
"""adds the session to the user's list of sessions wishlist"""
# get current user's Profile
user = self._getCurrentUserProfile()
# retrieve Session entity from request
# to be added to the user's wishlist
session_websafe_key = request.session_websafe_key
session_to_add = self._getEntityByWebSafeKey(session_websafe_key)
# check if user already added this Session to wishlist
session_in_wishlist = SessionWishlistItem.query(
ancestor=user.key).filter(
SessionWishlistItem.session_websafe_key == session_websafe_key).get()
if session_in_wishlist:
raise ConflictException('Session already found in wishlist.')
# create new key for SessionWishlistItem entity
# with user.key as parent
session_wishlist_id = SessionWishlistItem.allocate_ids(
size=1, parent=user.key)[0]
session_wishlist_key = ndb.Key(
SessionWishlistItem, session_wishlist_id, parent=user.key)
# prepare data to be used for creating new SessionWishlistItem entity
data = dict()
# overwrite the automatically-generated key
# with our custom parental key
data['key'] = session_wishlist_key
data['session_websafe_key'] = session_websafe_key
# the denormalized parent conference websafe key of this session
# used for easy query filtering in getSessionWishlistItem endpoint
data['parent_wsck'] = session_to_add.key.parent().get().key.urlsafe()
SessionWishlistItem(**data).put()
return request
def getSessionsInWishlist(self, request):
"""Gets all sessions the current user has wishlisted"""
user = endpoints.get_current_user()
if not user:
raise endpoints.UnauthorizedException('Authorization required')
user_id = getUserId(user)
session_keys = [
wl.sessionKey for wl in SessionWishlistItem.query(
SessionWishlistItem.userId == user_id)]
wl_sessions = [ndb.Key(urlsafe=k).get() for k in session_keys]
return ConferenceSessionForms(
items=[self._copyConferenceSessionToForm(cs) for cs in wl_sessions]
)
def getMostWishlistedSessions(self, request):
"""Returns the most wishlisted session"""
# get all wishlist entities
wishlisted_sessions = SessionWishlistItem.query()
print wishlisted_sessions
# extract Session keys from all SessionWishlistItem entities
# to be used for in _mostCommonItem(session_keys)
# which uses set() and 'Model' is not immutable
session_keys = [sess.session_websafe_key for sess in wishlisted_sessions]
# get most common item in session_keys list;
# AKA, the most wishlisted session.
most_wishlisted_session = ndb.Key(urlsafe=self._mostCommonItem(session_keys)).get()
return self._copySessionToForm(most_wishlisted_session)
def getSessionsInWishlist(self, request):
"""Given a conference,
find all user's SessionWishlistItem in that conference
"""
# get user and conference entities from request
user = self._getCurrentUserProfile()
conference = self._getEntityByWebSafeKey(request.wsck)
# query for SessionWishlistItem entities
# using user as ancestor
# and wsck as parent conference
wishlist = SessionWishlistItem.query(
ancestor=user.key).filter(
SessionWishlistItem.parent_wsck == conference.key.urlsafe()).fetch()
# get Session entities from wishlist
sessions = [ndb.Key(urlsafe=wishlist_item.session_websafe_key).get()
for wishlist_item in wishlist]
return SessionForms(items=[self._copySessionToForm(session)
for session in sessions])
