一对多模型序列化程序不在 django rest 框架中显示对象

Question

我在 django rest 框架中有一个一对多模型。视频是父项，标签是子项，我试图在视频序列化器中显示所有标签。

class Video(Base):
    video = models.FileField(null=True, blank=True)
    thumbnail = models.ImageField(null=True, blank=True)

class Tag(Base):
    video = models.ForeignKey(Video, on_delete=models.CASCADE, related_name='tags')
    text = models.CharField(max_length=100, null=True, blank=True)
    score = models.DecimalField(max_digits=10, decimal_places=2, blank=True, null=True)

在我的序列化程序中我有这个，

class VideoSerializer(serializers.ModelSerializer):
    video = serializers.FileField(max_length=None, use_url=True, allow_null=True, required=False)
    thumbnail = serializers.ImageField(max_length=None, use_url=True, allow_null=True, required=False)

    class Meta:
        model = Video
        fields = ('id', 'video', 'thumbnail', 'tags')

问题是序列化数据只显示标签的 id。任何帮助表示赞赏。

Answer 1

您必须为标签添加序列化程序。

例如：

class TagSerializer(Base):
   class Meta:
        model = Tag
        fields = ('id', 'text', 'score')

将VideoSerializer改成这样：

class VideoSerializer(serializers.ModelSerializer):
    video = serializers.FileField(max_length=None, use_url=True, allow_null=True, required=False)
    thumbnail = serializers.ImageField(max_length=None, use_url=True, allow_null=True, required=False)
    tags = TagSerializer(many=True)

    class Meta:
        model = Video
        fields = ('id', 'video', 'thumbnail', 'tags')

一对多模型序列化程序不在 django rest 框架中显示对象

One-To-Many Model Serializer not displaying object in django rest framework

django

django-rest-framework