def _createSessionObject(self, sessionForm):
"""Create Session object, returning SessionForm."""
# make sure user is authenticated
user = endpoints.get_current_user()
if not user:
raise endpoints.UnauthorizedException('Authorization required')
# get the conference
conf = ndb.Key(urlsafe=sessionForm.websafeConferenceKey).get()
if not conf:
raise endpoints.NotFoundException('No conference found with key: %s' % sessionForm.conferenceKey)
# check ownership
if getUserId(user) != conf.organizerUserId:
raise endpoints.ForbiddenException('Only the organizer of this conference can add sessions.')
# copy SessionForm/ProtoRPC Message into dict
data = formToDict(sessionForm, exclude=('websafeKey', 'websafeConferenceKey'))
# check required fields
for key in Session.required_fields_schema:
if not data[key]:
raise endpoints.BadRequestException("'%s' field is required to create a session." % key)
# convert date string to a datetime object.
try:
data['date'] = datetime.strptime(data['date'][:10], "%Y-%m-%d").date()
except (TypeError, ValueError):
raise endpoints.BadRequestException("Invalid date format. Please use 'YYYY-MM-DD'")
# convert date string to a time object. HH:MM
try:
data['startTime'] = datetime.strptime(data['startTime'][:5], "%H:%M").time()
except (TypeError, ValueError):
raise endpoints.BadRequestException("Invalid date format. Please use 'HH:MM'")
if data['duration'] <= 0:
raise endpoints.BadRequestException("Duration must be greater than zero")
if data['date'] < conf.startDate or data['date'] > conf.endDate:
raise endpoints.BadRequestException("Session must be within range of conference start and end date")
data['speaker'] = Speaker(name=data['speaker'])
# ask Datastore to allocate an ID.
s_id = Session.allocate_ids(size=1, parent=conf.key)[0]
# Datastore returns an integer ID that we can use to create a session key
data['key'] = ndb.Key(Session, s_id, parent=conf.key)
# Add session to datastore
session = Session(**data)
session.put()
# Add a task to check and update new featured speaker
taskqueue.add(
params={'websafeConferenceKey': conf.key.urlsafe(), 'speaker': session.speaker.name},
url='/tasks/set_featured_speaker'
)
return session.toForm()
