我有一种情况,其中一个表通过外键与另一个表相关,如下所示:
模型.py
class Container(models.Model):
size = models.CharField(max_length=20)
shape = models.CharField(max_length=20)
class Item(models.Model):
container = models.ForeignKey(Container, related_name='items')
name = models.CharField(max_length=20)
color = models.CharField(max_length=20)
序列化程序.py
class ItemSerializer(serializers.ModelSerializer):
class Meta:
model = Item
class ContainerSerializer(serializers.ModelSerializer):
items = ItemSerializer(many=True)
class Meta:
model = Container
fields = ('size', 'shape', 'items')
这工作正常,但我的问题是容器中的所有项目都被序列化。我只希望 color='green' 的项目被序列化。
最佳答案
class ContainerSerializer(serializers.ModelSerializer):
items = serializers.SerializerMethodField()
def get_items(self, obj):
query = Item.objects.filter(item_set__color='green')
serializer = ItemSerializer(query, many=True)
return serializer.data
class Meta:
model = Container
fields = ('size', 'shape', 'items')
关于Django REST Framework - 对嵌套序列化程序的查询限制?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25293764/