Django rest 多个嵌套相关

Question

我有 3 个表 Province、Commune 和 District 相互链接。

Province hasMany District
District hasMany Commune

当访问我的 api url api/v1/province/ 时，我得到了这样的数据

[
    {
        "id": 1,
        "name_eng": "Banteay Meanchey",
        "name_kh": "បន្ទាយមានជ័យ",
        "district": [
            {
                "id": 1,
                "name_eng": "Mongkol Borei",
                "name_kh": "មង្គលបុរី",
                "province": 1
            },
            {
                "id": 3,
                "name_eng": "Malay",
                "name_kh": "មា៉ឡៃ",
                "province": 1
            }
        ]
    },
]

我想让它像这样嵌套多个

[
    {
        "id": 1,
        "name_eng": "Banteay Meanchey",
        "name_kh": "បន្ទាយមានជ័យ",
        "district": [
            {
                "id": 1,
                "name_eng": "Mongkol Borei",
                "name_kh": "មង្គលបុរី",
                "province": 1
               "commune": [
                  "id": 1,
                  "name_eng": "Mongkol Borei",
                  "name_kh": "មង្គលបុរី",
               ]
            },       
        ]
    },

这样可以吗？？？ My Model

class Province(models.Model):
    name_eng = models.CharField(max_length=50)
    name_kh = models.CharField(max_length=50)


class District(models.Model):
    province = models.ForeignKey(
        Province, on_delete=models.CASCADE, related_name="district")
    name_eng = models.CharField(max_length=50)
    name_kh = models.CharField(max_length=50)


class Commune(models.Model):
    district = models.ForeignKey(
        District, on_delete=models.CASCADE, related_name="commune")
    name_eng = models.CharField(max_length=50)
    name_kh = models.CharField(max_length=50)

My Serializer

class ProvinceSerializer(serializers.ModelSerializer):
    # commune = serializers.SerializerMethodField()

    class Meta:
        model = Province
        fields = ['id', 'name_eng', 'name_kh', 'district']
        depth = 1


class DistrictSerializer(serializers.ModelSerializer):
    class Meta:
        model = District

        fields = ['id', 'name_eng', 'name_kh', 'commune']
        # fields = '__all__'
        depth = 1


class CommuneSerializer(serializers.ModelSerializer):
    class Meta:
        model = Commune
        # fields = '__all__'
        fields = ['id', 'name_eng', 'name_kh', 'district']
        depth = 1

感谢您的帮助。谢谢:)

Answer 1

是的，django 有可能做到这样的事情。 为了制作这个模型/序列化器，你应该使用嵌套关系（根据 DRF documentation）

您应该将您的 serializer.py 更改为：

class CommuneSerializer(serializers.ModelSerializer):
    class Meta:
        model = Commune
        fields = ['id', 'name_eng', 'name_kh']
        depth = 1


class DistrictSerializer(serializers.ModelSerializer):
    commune = CommuneSerializer(many=True)
    class Meta:
        model = District
        fields = ['id', 'name_eng', 'name_kh', 'commune']
        depth = 1


class ProvinceSerializer(serializers.ModelSerializer):
    district = DistrictSerializer(many=True)
    class Meta:
        model = Province
        fields = ['id', 'name_eng', 'name_kh', 'district']
        depth = 1