django - 父模型(包括子模型)的序列化

Question

我有模型 - 商品、服装和 child 模型，如配饰、外套等:

class Commodity(models.Model):
    atribute = models.CharField()

class Clother(models.Model):
    commodity = models.ForeignKey(Commodity)
    clother_atribute = models.CharField()

class Acessories(models.Model):
    clother = models.ForeignKey(Clother)
    acessories_atribute = models.CharField() 

class Outwear(models.Model):
    clother = models.ForeignKey(Clother)
    outwear_atribute = models.CharField()

如何序列化父模型商品以调用所有垂直依赖项？我想查询商品 id 并获取所有 Clother 属性和 Acessories 或 Outwear 属性。

Answer 1

如果我理解你的问题，你可以定义ClotherSerializer。您可以使用depth = 1在此序列化器中序列化嵌套对象:

class ClotherSerializer(serializers.ModelSerializer):
    class Meta:
        model = Clother
        fields = ('id', 'acessories_set', 'outwear_set')
        depth = 1

稍后在您的CommoditySerializer中，您可以使用ClotherSerializer来序列化clother及其所有关系:

class CommoditySerializer(serializers.ModelSerializer):
    clother_set = ClotherSerializer(many=True)
    class Meta:
        model = Commodity
        fields = ('id', 'clother_set')