django - 使用 django-rest-framework 序列化程序检索具有许多模型值

Question

class User(models.Model):
    name = models.CharField(max_length=100)

    def __str__(self):
        return self.name


class Address(models.Model):
    name = models.CharField(max_length=100)
    user = models.ForeignKey(User, related_name='address')

    def __str__(self):
        return self.name

如何使用 drf 序列化程序检索特定用户的地址？

Answer 1

步骤 1:为用户模型和地址模型编写序列化程序。
序列化程序.py

UserSerializer(serializers.ModelSerializer):
    """A serializer for User Model"""
   address = AddressSerializer(read_only=True, many=True)

    class Meta:
        model = User
        fields = "__all__"
        extra_fields = ["address"]

AddressSerializer(serializers.ModelSerializer):
    """A serializer for Address Model"""

    class Meta:
        model = Adddress
        fields = "__all__"

第 2 步:为您的用户模型编写查询以序列化您的数据。

View .py:

 queryset = User.objects.all().prefetch_related("address")
 serializer = UserSerializer(data=queryset)
 print(serializer.data)  # you will get all your user with their addresses.