def record_answer(self, scenario_id, answer_id):
"""Record this answer in the session; do any necessary updates."""
# get the correct answer
answer = Answer.get_by_key_name(answer_id or '--none--')
# if the lookup failed then this is not a valid answer
if not answer:
raise InvalidAnswerException('bad answer ID')
# verify that this answer is for this scenario
if not answer.scenario.key().name() == scenario_id:
raise InvalidAnswerException('answer and scenario do not match')
# record the answer ID
self.session.setdefault(scenario_id, [])
if answer_id not in self.session[scenario_id]:
self.session[scenario_id] += [answer_id]
# update session['completed'] if the answer is correct
if answer.is_correct:
self.session.setdefault('completed', {})
self.session['completed'][scenario_id] = datetime.now().isoformat()
def get(self, scenario_id):
state = LearnerState(self.session)
answer_id = state.last_answer_id(scenario_id) or "--none--"
answer = Answer.get_by_key_name(answer_id)
if answer is None:
self.redirect("/%s/question" % scenario_id)
return
if state.is_completed(scenario_id):
link_next = "/%s/disc1" % scenario_id
else:
link_next = "/%s/question" % scenario_id
context = dict(next=self.next(),
previous=self.previous(),
state=state.as_string(),
show_prevnext=False,
correct=state.is_completed(scenario_id),
response=answer.response,
link_next=link_next)
jt = self.jinja_environment().get_template('response.djt')
self.response.write(jt.render(context))
