我试图从Django Rest Framework返回一个HttpResponse,包括来自2个链接模型的数据。 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')
我想要一个瓶子模型的序列化器,其中包含来自相关葡萄酒的信息。
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')
哪个不起作用。
我有什么想法可以做到这一点?
谢谢:)
答案 0 :(得分:53)
如此简单,将WineSerializer作为字段添加解决了它。
class BottleSerializer(serializers.HyperlinkedModelSerializer):
wine = WineSerializer(source='wine')
class Meta:
model = Bottle
fields = ('url', 'wine', 'user', 'date_rated', 'rating', 'comment', 'get_more')
with:
class WineSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Wine
fields = ('id', 'url', 'color', 'country', 'region', 'appellation')
感谢@mariodev的帮助:)
答案 1 :(得分:2)
如果要获取特定字段,可以使用序列化器字段
https://www.django-rest-framework.org/api-guide/fields/
class BottleSerializer(serializers.HyperlinkedModelSerializer):
winecolor = serializers.CharField(read_only=True, source="wine.color")
class Meta:
model = Bottle
fields = ('url', 'winecolor', 'user', 'date_rated', 'rating', 'comment', 'get_more')