def update(votings=None):
tmp = StringIO.StringIO() # mb we can zip it, memcache allows only 1MB limit
writer = csv.writer(tmp,dialect=VotesDialect)
query = WineryRequest.all().order("-timestamp");
vote_counts = {}
if votings == None:
votings = Votings.get_votings()
# first pass, we gather vote_counts info
# and write votes.csv
# head row for votes
head_row = ("Timestamp","Name","City","State","IP")
writer.writerow(head_row)
votings.content_votes_head = tmp.getvalue() # add heading
tmp.seek(0) # reset string IO
for vote in query:
item = WS.get_by_id(vote.hash_id)
if item: # tuple (name,city,state)
row = (vote.timestamp.strftime(TIME_FORMAT),)+item+(vote.ip,)
writer.writerow(row)
# gathering vote counts
vote_counts[item] = vote_counts.get(item,0)+1
tmp.flush()
votings.content_votes = tmp.getvalue() # votes.csv
# second pass
# writing vote_counts.csv
# storing vote counts dict in memcache
# with that dict stored in memcache we will not redo full update again
# instead of full update() we will update by Votings.regenerate... functions
Votings.set_vote_counts_dict(vote_counts)
vote_counts_results = sorted(vote_counts.items(), key=itemgetter(1),reverse=True)
tmp = StringIO.StringIO() # mb we can zip it, memcache allows only 1MB limit
writer = csv.writer(tmp,dialect=VotesDialect)
# head row for vote counts
head_row = ("Total votes count","Name","City","State")
writer.writerow(head_row)
votings.content_vote_counts_head = tmp.getvalue() # add heading
tmp.seek(0) # reset string IO
for (item,count) in vote_counts_results:
writer.writerow((count,)+item)
tmp.flush()
votings.content_vote_counts = tmp.getvalue() # votes.csv
votings.put()
