def QuizGet(request, elementlimit=-1, qid=None, type="-1"):
"""get quiz
Args:
request: Django default parameter
elementlimit: -1 for unlimited, other positive number is the max element client wants to retrive
Returns:
XML file, the example could be seen in ../samples/quiz.xml
"""
if request.method == 'POST':
elementlimit = int(request.POST.get('elementlimit', ''))
username = Login.objects(session=request.session.session_key).first()
xml = Element("root")
i = 0
if qid is not None:
quizset = Quiz.objects(id=qid, creator=username.username)
elif type == "-1":
quizset = Quiz.objects(creator=username.username)
else:
quizset = Quiz.objects(creator=username.username, type=int(type))
for quiz in quizset:
xmlquiz = Element('quiz')
SubElement(xmlquiz, 'creator').text = smart_unicode(quiz.creator)
SubElement(xmlquiz, 'id').text = smart_unicode(str(quiz.id))
quiz_info = Element('quiz_info')
while len(quiz.info) > 0:
quizinfo = quiz.info.pop(0)
try:
SubElement(quiz_info, smart_str(quizinfo.type)).text = smart_unicode(quizinfo.description)
except KeyError:
pass
xmlquiz.append(quiz_info)
SubElement(xmlquiz, 'description').text = smart_unicode(quiz.description)
attachments = Element('attachments')
SubElement(xmlquiz,"attnum").text = str(len(quiz.attachment))
for attach in quiz.attachment:
xmlatt = Element("attachment")
SubElement(xmlatt, "description").text = smart_unicode(attach.description)
SubElement(xmlatt, "file").text = smart_unicode(attach.file)
attachments.append(xmlatt)
xmlquiz.append(attachments)
correct_answer = Element('correct_answer')
for answer in quiz.correctanswer:
xmlans = Element('answer')
SubElement(xmlans, 'string').text = smart_unicode(answer.answer)
SubElement(xmlans, 'attach').text = smart_unicode(answer.attach)
correct_answer.append(xmlans)
xmlquiz.append(correct_answer)
wrong_answer = Element('wrong_answer')
for answer in quiz.wronganswer:
xmlans = Element('answer')
SubElement(xmlans, 'string').text = smart_unicode(answer.answer)
SubElement(xmlans, 'attach').text = smart_unicode(answer.attach)
wrong_answer.append(xmlans)
xmlquiz.append(wrong_answer)
SubElement(xmlquiz, 'manual_difficulty').text = smart_unicode(quiz.manualdifficulty)
SubElement(xmlquiz, 'auto_difficulty').text = smart_unicode(quiz.autodifficulty)
tags = Element('tags')
while len(quiz.tag) > 0:
tag = quiz.tag.pop(0)
SubElement(tags, 'tag').text = smart_unicode(tag)
xmlquiz.append(tags)
xml.append(xmlquiz)
i += 1
if elementlimit != -1 and i >= elementlimit:
break
return HttpResponse(smart_unicode(tostring(xml,encoding='UTF-8')),content_type='text/xml')
def QuizInsert(request, xml=''):
"""insert quiz into database
Args:
xmlstr: A xml string, the root label is root, and each quiz is enclosed by <quiz></quiz> label
Returns:
ERR UNKNOWN: unknown error
XML EPT: xml is empty
QUIZ ADD OK, id=%d %d represent for id in database
"""
returnmsg = 'ERR UNKNOWN'
if request.method == 'GET':
return HttpResponse('NO GET METHOD')
if request.method == 'POST':
xml=smart_str(request.POST.get('xml',''))
if xml == '':
returnmsg = "XML EPT"
else:
#try:
#xml = str(xml).decode()
#xml = str(xml).encode('UTF-8')
quizxml = fromstring(xml)
#except:
# return HttpResponse("XML ERR")
quizall = quizxml.findall('quiz')
while len(quizall) > 0:
qp = QuizParser(quizall.pop(0))
username = Login.objects(session=request.session.session_key).first()
quiz = Quiz(creator=username.username, description=qp.GetDescription(), manualdifficulty=float(qp.GetManualDifficulty()))
info = qp.GetInfoDict()
#fill quiz info
if info is not None:
try:
if info['type'] is not None:
quiz.info.append(QuizInfo(type='type', description=info['type']))
quiz.type = int(info['type'])
except KeyError:
pass
try:
if info['choose'] is not None:
quiz.info.append(QuizInfo(type='choose', description=info['choose']))
except KeyError:
pass
try:
if info['order'] is not None:
quiz.info.append(QuizInfo(type='order', description=info['order']))
except KeyError:
pass
try:
if info['selection number'] is not None:
quiz.info.append(QuizInfo(type='selection_number', description=info['selection number']))
except KeyError:
pass
#fill quiz attachments
attch = qp.GetAttachmentList()
if attch is not None:
for tmpattch in attch:
try:
quiz.attachment.append(QuizAttach(description=tmpattch['description'], file=tmpattch['file']))
except KeyError:
pass
#fill answers
answer = qp.GetCorrectAnswerList()
if answer is not None:
while len(answer) > 0:
try:
tmpanswer = answer.pop(0)
quiz.correctanswer.append(QuizAnswer(answer=tmpanswer['string'],attach=tmpanswer['attach']))
except KeyError:
pass
answer = qp.GetWrongAnswerList()
if answer is not None:
while len(answer) > 0:
try:
tmpanswer = answer.pop(0)
quiz.wronganswer.append(QuizAnswer(answer=tmpanswer['string'],attach=tmpanswer['attach']))
except KeyError:
pass
#fill tags
tags = qp.GetTagList()
if tags is not None:
while len(tags) > 0:
try:
tmptags = tags.pop(0)
quiz.tag.append(tmptags)
except KeyError:
pass
quiz.save()
returnmsg = 'QUIZ ADD OK id='+ str(quiz.id)
return HttpResponse(returnmsg)