kopia lustrzana https://dev.funkwhale.audio/funkwhale/funkwhale
142 wiersze
4.4 KiB
Python
142 wiersze
4.4 KiB
Python
from django.db import transaction
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from rest_framework import serializers
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from funkwhale_api.common import preferences
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from funkwhale_api.music.models import Track
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from funkwhale_api.music.serializers import TrackSerializer
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from funkwhale_api.users.serializers import UserBasicSerializer
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from . import models
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class PlaylistTrackSerializer(serializers.ModelSerializer):
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# track = TrackSerializer()
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track = serializers.SerializerMethodField()
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class Meta:
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model = models.PlaylistTrack
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fields = ("id", "track", "playlist", "index", "creation_date")
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def get_track(self, o):
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track = o._prefetched_track if hasattr(o, "_prefetched_track") else o.track
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return TrackSerializer(track).data
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class PlaylistTrackWriteSerializer(serializers.ModelSerializer):
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index = serializers.IntegerField(required=False, min_value=0, allow_null=True)
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class Meta:
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model = models.PlaylistTrack
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fields = ("id", "track", "playlist", "index")
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def validate_playlist(self, value):
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if self.context.get("request"):
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# validate proper ownership on the playlist
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if self.context["request"].user != value.user:
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raise serializers.ValidationError(
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"You do not have the permission to edit this playlist"
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)
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existing = value.playlist_tracks.count()
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max_tracks = preferences.get("playlists__max_tracks")
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if existing >= max_tracks:
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raise serializers.ValidationError(
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"Playlist has reached the maximum of {} tracks".format(max_tracks)
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)
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return value
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@transaction.atomic
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def create(self, validated_data):
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index = validated_data.pop("index", None)
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instance = super().create(validated_data)
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instance.playlist.insert(instance, index)
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return instance
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@transaction.atomic
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def update(self, instance, validated_data):
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update_index = "index" in validated_data
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index = validated_data.pop("index", None)
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super().update(instance, validated_data)
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if update_index:
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instance.playlist.insert(instance, index)
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return instance
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def get_unique_together_validators(self):
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"""
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We explicitely disable unique together validation here
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because it collides with our internal logic
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"""
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return []
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class PlaylistSerializer(serializers.ModelSerializer):
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tracks_count = serializers.SerializerMethodField(read_only=True)
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duration = serializers.SerializerMethodField(read_only=True)
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album_covers = serializers.SerializerMethodField(read_only=True)
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user = UserBasicSerializer(read_only=True)
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is_playable = serializers.SerializerMethodField()
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class Meta:
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model = models.Playlist
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fields = (
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"id",
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"name",
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"user",
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"modification_date",
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"creation_date",
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"privacy_level",
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"tracks_count",
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"album_covers",
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"duration",
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"is_playable",
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)
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read_only_fields = ["id", "modification_date", "creation_date"]
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def get_is_playable(self, obj):
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try:
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return bool(obj.is_playable_by_actor)
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except AttributeError:
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return None
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def get_tracks_count(self, obj):
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try:
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return obj.tracks_count
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except AttributeError:
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# no annotation?
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return obj.playlist_tracks.count()
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def get_duration(self, obj):
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try:
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return obj.duration
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except AttributeError:
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# no annotation?
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return 0
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def get_album_covers(self, obj):
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try:
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plts = obj.plts_for_cover
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except AttributeError:
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return []
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covers = []
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max_covers = 5
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for plt in plts:
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url = plt.track.album.cover.crop["200x200"].url
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if url in covers:
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continue
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covers.append(url)
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if len(covers) >= max_covers:
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break
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full_urls = []
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for url in covers:
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if "request" in self.context:
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url = self.context["request"].build_absolute_uri(url)
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full_urls.append(url)
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return full_urls
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class PlaylistAddManySerializer(serializers.Serializer):
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tracks = serializers.PrimaryKeyRelatedField(
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many=True, queryset=Track.objects.for_nested_serialization()
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)
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