Django REST - 如何获得具有两个模型的 JSON?

Django REST - How can I get a JSON with two models?

我有两个模型(地图和地点),我想用这两个模型创建一个 JSON(地图包含多个地点)。

models.py

class Map(models.Model):
   name = models.CharField(max_length=100)
   slug = models.SlugField(max_length=200)

class Place(models.Model):
   map = models.ForeignKey('main.Map')
   name = models.CharField(max_length=100)
   slug = models.SlugField(max_length=200)

我用它来分别序列化这些模型:

serializers.py

class MapSerializer(serializers.ModelSerializer):
    class Meta:
        model = Map
        fields = ('id', 'name')

class PlaceSerializer(serializers.ModelSerializer):
    class Meta:
        model = Place
        fields = ('id', 'name', 'map')

我想要这样的 JSON,但我不知道如何正确序列化它...

{
    "maplist": {
        "maps": [
            {
                "id": "1",
                "name": "dust2",
                "places": [
                    {
                        "id": "1",
                        "name": "Long"
                    },
                    {
                        "id": "2",
                        "name": "Middle"
                    }
                ]
            },
            {
                "id": "2",
                "name": "inferno",
                "places": [
                    {
                        "id": "1",
                        "name": "Middle"
                    },
                    {
                        "id": "2",
                        "name": "ASite"
                    }
                ]
            }


        ]
    }
}

在此先感谢您的帮助。

尝试使用嵌套序列化程序:

class PlaceSerializer(serializers.ModelSerializer):
    class Meta:
        model = Place
        fields = ('id', 'name')

class MapSerializer(serializers.ModelSerializer):
    places = PlaceSerializer(many=True)
    class Meta:
        model = Map
        fields = ('id', 'name')

要使其正常工作,您需要更改模型以包含外键的相关名称:

class Place(models.Model):
   map = models.ForeignKey('main.Map', related_name="places")
   name = models.CharField(max_length=100)
   slug = models.SlugField(max_length=200)