相关疑难解决方法(0)

我有以下型号:

class Song(models.Model):
    name = models.CharField(max_length=64)

    def __unicode__(self):
        return self.name

class UserProfile(AbstractUser):
    current = models.ManyToManyField(Song, related_name="in_current", blank=True)
    saved = models.ManyToManyField(Song, related_name="in_saved", blank=True)
    whatever = models.ManyToManyField(Song, related_name="in_whatever", blank=True)

    def __unicode__(self):
        return self.get_username()

以及序列化器:

class SongSerializer(serializers.ModelSerializer):
    class Meta:
        model = Song

class UserProfileSongsSerializer(serializers.ModelSerializer):
    current = SongSerializer(many=True)
    saved = SongSerializer(many=True)
    whatever = SongSerializer(many=True)

    class Meta:
        model = UserProfile
        fields = ("id", "current", "saved", "whatever")

并且我正在使用UpdateAPIView:

class UserProfileSongsUpdate(generics.UpdateAPIView):
    queryset = UserProfile.objects.all()
    serializer_class = UserProfileSongsSerializer

问题:我无法将歌曲(即使它已经存在于数据库中)添加到任何(当前,已保存,无论如何),我只能删除它.

curl -X PUT -d '{"current": [{"id": 1, "name": "sialalalal"}, …