def setPreferences(request):
lecture = request.context.lecture
times = lecture.prepareTimePreferences(user=request.user)
row = 1
tps = []
while 'time-%i' % row in request.POST:
time = types.TutorialTime(request.POST['time-%i' % row])
tp = models.getOrCreate(models.TimePreference, request.db,
(lecture.id, request.user.id, time))
tp.penalty = int(request.POST['pref-%i' % row])
tps.append(tp)
row += 1
if lecture.minimum_preferences:
valid = len(filter(lambda tp: tp.penalty < 100,
tps)) >= lecture.minimum_preferences
else:
#TODO: Works not for just one tutorial!
min_number_of_times = len(tps) / 100.0 + 1
penalty_count = sum([1.0 / tp.penalty for tp in tps])
valid = penalty_count > min_number_of_times
if not valid:
request.db.rollback()
request.session.flash(u'Fehler: Sie haben zu wenige Zeiten ausgewählt',
queue='errors')
else:
request.db.commit()
request.session.flash(u'Präferenzen gespeichert.', queue='messages')
return HTTPFound(
location=request.route_url('lecture_view', lecture_id=lecture.id))
def __init__(self, request):
MatplotlibView.__init__(self)
self.request = request
lecture = self.request.context.lecture
time = self.request.matchdict['time']
preferences = self.request.db.query(sa.func.count(TimePreference.penalty),TimePreference.penalty).filter(TimePreference.lecture_id==lecture.id)\
.filter(TimePreference.time==time).group_by(TimePreference.penalty).order_by(TimePreference.penalty).all()
prefdict = {}
for count, penalty in preferences:
prefdict[penalty] = count
self.bars = [prefdict.get(p['penalty'], 0) for p in utils.preferences]
self.inds = range(len(utils.preferences))
self.xticks = [p['name'] for p in utils.preferences]
self.label = types.TutorialTime(time).__html__()