python - Django Rest Framework - 在序列化程序中获取相关模型字段

Question

我正在尝试从 Django Rest 框架返回一个 HttpResponse，包括来自 2 个链接模型的数据。这些模型是:

class Wine(models.Model):

    color = models.CharField(max_length=100, blank=True)
    country = models.CharField(max_length=100, blank=True)
    region = models.CharField(max_length=100, blank=True)
    appellation = models.CharField(max_length=100, blank=True)

class Bottle(models.Model):

    wine = models.ForeignKey(Wine, null=False)
    user = models.ForeignKey(User, null=False, related_name='bottles')

我想要一个包含来自相关 Wine 的信息的 Bottle 模型的序列化程序。

我试过了:

class BottleSerializer(serializers.HyperlinkedModelSerializer):
    wine = serializers.RelatedField(source='wine')

    class Meta:
        model = Bottle
        fields = ('url', 'wine.color', 'wine.country', 'user', 'date_rated', 'rating', 'comment', 'get_more')

这不起作用。

有什么想法可以做到吗？

谢谢:)

Answer 1

就这么简单，将 WineSerializer 添加为字段即可解决。

class BottleSerializer(serializers.HyperlinkedModelSerializer):
    wine = WineSerializer(source='wine')

    class Meta:
        model = Bottle
        fields = ('url', 'wine', 'user', 'date_rated', 'rating', 'comment', 'get_more')

与:

class WineSerializer(serializers.HyperlinkedModelSerializer):

    class Meta:
        model = Wine
        fields = ('id', 'url', 'color', 'country', 'region', 'appellation')

感谢@mariodev 的帮助 :)