在外键django中保存多个值

Save multiple values in foreign key django

我想在一个外键中保存多个关系对象,但不幸的是,我收到了一个错误,附在下面。我的数据库中已经有 ID 为 189 的对象

错误:

{
    "tags": [
        "Invalid pk \"189\" - object does not exist."
    ]
}

views.py

queryset = PackageRoom.objects.all()
serializer = PackageRoomSerializer(queryset, many=True)    
return Response(serializer.data)

serializers.py

class PackageRoomSerializer(serializers.ModelSerializer):
    tags = serializers.PrimaryKeyRelatedField(queryset=PackageRoom.objects.all(), many=True)
    class Meta:
        model = PackageRoom
        fields = ['id', 'name', 'description', 'tags']

models.py

class Tag(models.Model):
    name = models.CharField(max_length=255, default='')
    description = models.CharField(max_length=255, default='')
    singleline = models.ManyToManyField(Singleline)

    class Meta:
        db_table = 'tags'



class PackageRoom(models.Model):
    name = models.CharField(max_length=255, default='')
    tags = models.ForeignKey(Tag, on_delete=models.PROTECT) 

    class Meta:
        db_table = 'package_rooms'

我在那里犯了一个愚蠢的错误,我在我的序列化程序中传递了 PackageRoom 模型,但我需要传递 Tag 模型。

class PackageRoomSerializer(serializers.ModelSerializer):
    tags = serializers.PrimaryKeyRelatedField(queryset=Tag.objects.all(), many=True)
    class Meta:
        model = PackageRoom
        fields = ['id', 'name', 'description', 'tags']