如何将数组对象添加到 Django 中的嵌套对象？

Question

我需要将一个对象数组添加到另一个结构如下所示的对象中。

这是专辑的当前回复：

[
  {
    "id": "1",
    "name": "Skin",
    "artists": [
      {
        "id": "1",
        "name": "Flume",
      }
    ],
    "tracks": [
      {
        "id": "1",
        "name": "Take A Chance"
      }
    ]
  }
]

我需要将专辑响应中的 tracks 对象转换为：

[
  {
    "id": "1",
    "name": "Skin",
    "artists": [
      {
        "id": "1",
        "name": "Flume",
      }
    ],
    "tracks": {
      "items": [
        {
          "id": "1",
          "name": "Take A Chance"
        }
      ]
    }
  }
]

编辑：这是我当前的模型、视图和序列化程序：

class Artist(models.Model):
    name = models.CharField(max_length=300)
    albums = models.ManyToManyField('albums.Album', related_name='artists')
    tracks = models.ManyToManyField('tracks.Track', related_name='artists')


class Album(models.Model):
    name = models.CharField(max_length=400)


class Track(models.Model):
    name = models.CharField(max_length=400)
    album = models.ForeignKey('albums.Album', related_name='tracks', on_delete=models.CASCADE)

#views.py
class AlbumAPIView(RetrieveAPIView):
    queryset = Album.objects.all()
    serializer_class = AlbumsSerializer
    lookup_field = 'id'

#serializers.py
class AlbumsSerializer(serializers.ModelSerializer):
    artists = ArtistsSerializer(many=True)
    tracks = TrackSerializer(many=True)

    class Meta:
        model = Album
        fields = [
            'id',
            'name',
            'artists',
            'tracks',
        ]

class ArtistsSerializer(serializers.ModelSerializer):

    class Meta:
        model = Artist
        fields = [
            'id',
            'name',
        ]

class TrackSerializer(serializers.ModelSerializer):
    artists = ArtistsSerializer(many=True)

    class Meta:
        model = Track
        fields = [
            'id',
            'name',
            'artists',
        ]

UPD：添加了序列化程序和视图！

任何帮助将不胜感激。

Answer 1

你可以这样做：

class AlbumsSerializer(serializers.ModelSerializer):
    artists = ArtistsSerializer(many=True)
    tracks = serializers.SerializerMethodField()
    
    def get_tracks(self, obj):
        serializer = TrackSerializer(obj.tracks, many=True)
        return {'items' : serializer.data}

    class Meta:
        model = Album
        fields = [
            'id',
            'name',
            'artists',
            'tracks',
        ]