def post(self,u_id):
theta=5.0
ec=None
key=int(u_id)
query=EstimationCredentials.query(EstimationCredentials.key==ndb.Key('EstimationCredentials',key))
if query.count() == 1:
ec=query.get()
theta=ec.estimatedTheta
if self.request.get("i") == "true":
#check if incrementable
if theta+1.0<=10:
theta=theta+1.0
else:
self.response.out.write("F")
return
else:
#check if decrementable
if theta-1.0>=0:
theta=theta-1.0
else:
self.response.out.write("F")
return
else:
self.response.out.write("F")
return
self.setTheta(ec,float(theta))
self.response.out.write("S")
def analyzeQuestion(self,question):
answers=[]
try:
answers=dbhelper.fetchAnswersOf(question)
except dbhelper.InvalidIdError:
raise
#TODO must check answers size
correctAnswereeThetas={}
totalAnswereeThetas={}
#initialize all possible estimation thetas
for j in range(0,10,1):
correctAnswereeThetas[float(j)]=0.0
totalAnswereeThetas[float(j)]=0.0
for answer in answers:
#find number of people who gave this answer, make it distinct for user, meaning only one answer by a given user will be tabulated
query=AnsweredQuestion.query(AnsweredQuestion.answer==ndb.Key('Answer',answer.key.id()),projection=[AnsweredQuestion.user],distinct=True)
givenAnswers=query.fetch() #who are the people who answered this question?
for givenAnswer in givenAnswers:
who=EstimationCredentials.query(EstimationCredentials.user==givenAnswer.user)
#TODO check if there is only one credential(not implemented just now)
#find theta of this person
theta=who.get().estimatedTheta
totalAnswereeThetas[theta]=totalAnswereeThetas[theta]+1.0
if answer.correct:
#increment the specific estimatedTheta counter by 1
correctAnswereeThetas[theta]=correctAnswereeThetas[theta]+1.0
#normalize correctAnswerrThetas
for j in range(0,10,1):
if totalAnswereeThetas[float(j)]!=0: #ensures we don't divide by zero
correctAnswereeThetas[float(j)]=correctAnswereeThetas[float(j)]/totalAnswereeThetas[float(j)]
return (answers, correctAnswereeThetas, totalAnswereeThetas)
def get(self):
vals={}
user=users.get_current_user()
if not user:
self.redirect(users.create_login_url(self.request.uri))
else:
query=EstimationCredentials.query()
vals['credentials']=query.fetch()
template=jinjaEnv.get_template('credential.html')
self.response.out.write(template.render(vals))
def createDefaultCredential(user, theta=5.0): es=None query=EstimationCredentials.query(EstimationCredentials.user==user) if query.count()==1: #already exists, return return else: es=EstimationCredentials() es.user=user es.estimatedTheta=theta es.put()