def compute_results(election):
voted_ballots = db(db.ballot.election_id == election.id)(db.ballot.voted == True).select()
counters = {}
rankers = {}
for ballot in voted_ballots:
results = unpack_results(ballot.results)
for key in results:
(name, scheme, value) = key
if scheme == "checkbox":
counters[key] = counters.get(key, 0) + (1 if results[key] else 0)
elif scheme == "ranking":
if not name in rankers:
rankers[name] = [[]]
vote = rankers[name][-1]
position = int(results[key])
d = position - len(vote)
if d > 0:
vote += [0] * d
vote[position - 1] = value
else:
raise RuntimeError("Invalid Voting Scheme")
for name in rankers:
votes = rankers[name]
cmajority = borda(votes, mode="exponential")
ciro = iro(votes)
cschulze = schulze(votes)
for (r, k) in cmajority:
counters[(name, "ranking", k)] = "M:%s" % r
for (r, k) in ciro:
counters[(name, "ranking", k)] += " I:%s" % r
for (r, k) in cschulze:
counters[(name, "ranking", k)] += " S:%s" % r
election.update_record(counters=pack_counters(counters))
def compute_results(election):
voted_ballots = db(db.ballot.election_id==election.id
)(db.ballot.voted==True).select()
counters = {}
rankers = {}
for ballot in voted_ballots:
results = unpack_results(ballot.results)
for key in results:
(name,scheme,value) = key
if scheme == 'checkbox':
counters[key] = counters.get(key,0) + (
1 if results[key] else 0)
elif scheme == 'ranking':
if not name in rankers:
rankers[name] = [[]]
vote = rankers[name][-1]
position = int(results[key])
d = position-len(vote)
if d>0: vote+=[0]*d
vote[position-1] = value
else:
raise RuntimeError("Invalid Voting Scheme")
for name in rankers:
votes = rankers[name]
cmajority = borda(votes,mode='exponential')
ciro = iro(votes)
cschulze = schulze(votes)
for (r,k) in cmajority:
counters[(name,'ranking',k)] = 'M:%s' % r
for (r,k) in ciro:
counters[(name,'ranking',k)] += ' I:%s' % r
for (r,k) in cschulze:
counters[(name,'ranking',k)] += ' S:%s' % r
election.update_record(counters=pack_counters(counters))
def compute_results(election):
query = db.ballot.election_id==election.id
voted_ballots = db(query)(db.ballot.voted==True).select()
counters = {}
rankers = {}
for k,ballot in enumerate(voted_ballots):
for name in ballot.results:
# name is the name of a group as in {{name:ranking}}
# scheme is "ranking" or "checkbox" (default)
# value is the <input value="value"> assigned to this checkbox or input
# INPORTANT ONLY SUPPORT SIMPLE MAJORITY
key = name +'/simple-majority/' + ballot.results[name]
(name,scheme,value) = key.split('/',3)
if scheme == 'simple-majority':
# counters[key] counts how many times this checkbox was checked
counters[key] = counters.get(key,0) + 1
elif scheme == 'ranking':
raise NotImplementedError
# rankers[name] = [[2,1,3],[3,1,2],[1,2,3],...]
# The sublists in rankers mean:
# [[my first-preferred candidate is
# the candidate whose identifying
# number on the original ballot was
# <the number given in this first
# position here>],
# [my second-preferred candidate is
# the candidate whose identifying
# number on the original ballot was
# <the number given in this second
# position here>],
# [my third-preferred candidate is
# the candidate whose identifying
# number on the original ballot was
# <the number given in this third
# position here>], ...]
#
# len(rankers[name]) = len(voted_ballots)
# rankers[name][i][0] = ...?
if not name in rankers:
rankers[name] = []
if len(rankers[name])<k+1:
rankers[name].append([])
vote = rankers[name][-1]
print "ballot id:",ballot.id, "key:",key, "results[key]:",results[key], "vote:",vote
ranking = int(results[key])
d = ranking-len(vote)
if d>0:
print "vote before:", vote
vote+=[0]*d
print "vote after: ", vote
vote[ranking-1] = value
else:
raise RuntimeError("Invalid Voting Scheme")
for name in rankers:
votes = rankers[name]
cmajority = borda(votes,mode='exponential')
ciro = iro(votes)
cschulze = schulze(votes)
key = name+'/simple-majority/'+k
for (r,k) in cmajority:
counters[key] = 'M:%s' % r
for (r,k) in ciro:
counters[key] += ' I:%s' % r
for (r,k) in cschulze:
counters[key] += ' S:%s' % r
print counters
election.update_record(counters=counters)