[英]Django Rest Framework - Get related model field in serializer
我正在嘗試從Django Rest Framework返回一個HttpResponse,包括來自2個鏈接模型的數據。 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')
我想要一個Bottle模型的序列化器,其中包含來自相關Wine的信息。
我試過了:
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')
這不起作用。
任何想法我怎么能這樣做?
謝謝 :)
就這么簡單,將WineSerializer添加為字段解決了它。
class BottleSerializer(serializers.HyperlinkedModelSerializer):
wine = WineSerializer(source='wine')
class Meta:
model = Bottle
fields = ('url', 'wine', 'user', 'date_rated', 'rating', 'comment', 'get_more')
有:
class WineSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Wine
fields = ('id', 'url', 'color', 'country', 'region', 'appellation')
感謝您幫助@mariodev :)
如果要獲取特定字段,可以使用序列化程序字段
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')
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