def random_photos_for_species(species):
key = 'species-photo-ids:%s' % species.pk
photo_ids = r.smembers(key)
if not photo_ids or len(photo_ids) < 2:
photo_ids = list(species.visible_photos().values_list('pk',flat=True))
r.delete(key)
for id in photo_ids:
r.sadd(key, id)
r.expire(key, 10 * 60)
counts = [
c or 0 for c in r.mget(
*['bestpics-photo-times-seen:%s' % i for i in photo_ids]
)
]
# Pick first photo biased based on number of times they have been seen
inverted_scores = [max(counts) - c for c in counts]
first_photo = photo_ids[random_index_with_bias(inverted_scores)]
remainder = list(id for id in photo_ids if id != first_photo)
second_photo = random.choice(remainder)
photos = list(
Photo.objects.select_related('created_by').filter(
pk__in = [first_photo, second_photo]
)
)
random.shuffle(photos)
return photos
def update_redis_set():
r.delete(SPECIES_SET + '-temp')
species_with_multiple_photos = Species.objects.filter(
sightings__photos__is_visible = True
).annotate(
num_photos = models.Count('sightings__photos')
).filter(num_photos__gt = 1)
for species in species_with_multiple_photos:
r.sadd(SPECIES_SET + '-temp', species.pk)
r.rename(SPECIES_SET + '-temp', SPECIES_SET)
def process_submission(request):
# Process the previous submission
try:
options = signed.loads(request.POST.get('options', ''))
except ValueError:
return {}
if (int(time.time()) - options['time']) > (5 * 60):
return {} # Form is too old
if not utils.check_token(options['token']):
return {} # Token invalid
species_pk = options['species']
contestants = options['contestants']
winner = int(request.POST.get('winner', ''))
if not winner:
return {}
loser = (set(contestants) - set([winner])).pop()
# Record a win!
context = utils.record_win(species_pk, winner, loser)
if not request.user.is_anonymous():
utils.record_contribution_from(request.user.username)
photos = Photo.objects.select_related(
'created_by'
).in_bulk([winner, loser])
last_species = Species.objects.get(pk = species_pk)
description = '''
%s: <a href="%s">%s</a>: <a href="%s"><img src="%s"></a> beat
<a href="%s"><img src="%s"></a>
''' % (
str(datetime.datetime.now()),
last_species.get_absolute_url(),
last_species.common_name,
photos[winner].get_absolute_url(),
photos[winner].thumb_75_url(),
photos[loser].get_absolute_url(),
photos[loser].thumb_75_url(),
)
if not request.user.is_anonymous():
description += ' (rated by <a href="%s">%s</a>)' % (
request.user.username, request.user.username
)
# And record the species so we don't show it to them multiple times
set_key = utils.USER_SEEN_SET % request.user.username
list_key = utils.USER_SEEN_LIST % request.user.username
r.push(list_key, species_pk, head=True)
r.sadd(set_key, species_pk)
if r.scard(set_key) >= SEEN_SPECIES_COUNT:
r.srem(set_key, r.pop(list_key, tail=True))
r.push('bestpic-activity', description, head=True)
r.ltrim('bestpic-activity', 0, 200)
context.update({
'last_species': last_species,
'last_winner': photos[winner],
'last_loser': photos[loser],
'show_link_to_best': utils.species_has_top_10(last_species),
})
return context
