def skip(self):
try:
current = Track.objects.get(now_playing=True,
establishment=self.establishment)
self.stop_track(current)
qs = Track.objects.filter(now_playing=False,
establishment=self.establishment
).exclude(id=current.id)
except Track.DoesNotExist:
current = None
qs = Track.objects.filter(establishment=self.establishment,
now_playing=False)
# use current to prevent skip to the same song
# get the first by vote
if current is not None:
track = Track.ordered_qs(establishment=self.establishment
).exclude(id=current.id).first()
else:
track = Track.ordered_qs(establishment=self.establishment
).first()
# get random
if not track:
new_qs = qs.filter(played_on_random=False)
if new_qs.exists():
qs = new_qs
else:
qs.update(played_on_random=False)
# select a track at random
last = qs.count() - 1
if last >= 0:
index = randint(0, last)
try:
track = qs[index]
except IndexError:
# on the very unlikely event of selecting an index that
# disappeared between the two queries we try selecting the
# first one.
track = qs.first()
if track:
with transaction.atomic():
# make sure we don't have a race condition and end up with
# two tracks now_playing
track.now_playing = True
track.played_on_random = True
track.save()
assert Track.objects.filter(now_playing=True,
establishment=self.establishment
).count() == 1
self.broadcast_track_changed(track)
return track
def skip(self):
try:
current = Track.objects.get(now_playing=True,
establishment=self.establishment)
self.stop_track(current)
qs = Track.objects.filter(
now_playing=False,
establishment=self.establishment).exclude(id=current.id)
except Track.DoesNotExist:
current = None
qs = Track.objects.filter(establishment=self.establishment,
now_playing=False)
# use current to prevent skip to the same song
# get the first by vote
if current is not None:
track = Track.ordered_qs(establishment=self.establishment).exclude(
id=current.id).first()
else:
track = Track.ordered_qs(establishment=self.establishment).first()
# get random
if not track:
new_qs = qs.filter(played_on_random=False)
if new_qs.exists():
qs = new_qs
else:
qs.update(played_on_random=False)
# select a track at random
last = qs.count() - 1
if last >= 0:
index = randint(0, last)
try:
track = qs[index]
except IndexError:
# on the very unlikely event of selecting an index that
# disappeared between the two queries we try selecting the
# first one.
track = qs.first()
if track:
with transaction.atomic():
# make sure we don't have a race condition and end up with
# two tracks now_playing
track.now_playing = True
track.played_on_random = True
track.save()
assert Track.objects.filter(
now_playing=True,
establishment=self.establishment).count() == 1
self.broadcast_track_changed(track)
return track
def track_list_serialize(self):
qs = Track.ordered_qs(establishment=self.establishment)
PlayList = namedtuple('PlayList', ['tracks', 'now_playing'])
return TrackListSerializer(PlayList(qs, self.get_now_playing()))
def track_list_serialize(self):
qs = Track.ordered_qs(establishment=self.establishment)
PlayList = namedtuple('PlayList', ['tracks', 'now_playing'])
return TrackListSerializer(PlayList(qs, self.get_now_playing()))