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Code Issues Releases Wiki Activity

Permissions and db state fixes with new index field

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Eliot Berriot 2018-03-19 15:28:33 +01:00
parent 257e67b5a6
commit e87e2654e8
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6 changed files with 148 additions and 20 deletions
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16
api/funkwhale_api/playlists/models.py
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@ -67,13 +67,18 @@ class Playlist(models.Model):
plt.save(update_fields=['index'])
return index
def remove(self, index):
existing = self.playlist_tracks.select_for_update()
to_update = existing.filter(index__gt=index)
return to_update.update(index=models.F('index') - 1)
class PlaylistTrack(models.Model):
track = models.ForeignKey(
'music.Track',
related_name='playlist_tracks',
on_delete=models.CASCADE)
index = models.PositiveIntegerField(null=True)
index = models.PositiveIntegerField(null=True, blank=True)
playlist = models.ForeignKey(
Playlist, related_name='playlist_tracks', on_delete=models.CASCADE)
creation_date = models.DateTimeField(default=timezone.now)
@ -81,3 +86,12 @@ class PlaylistTrack(models.Model):
class Meta:
ordering = ('-playlist', 'index')
unique_together = ('playlist', 'index')
def delete(self, *args, **kwargs):
playlist = self.playlist
index = self.index
update_indexes = kwargs.pop('update_indexes', False)
r = super().delete(*args, **kwargs)
if index is not None and update_indexes:
playlist.remove(index)
return r