将PointFeild转换为JSON对象

问题描述

有什么方法可以将GeoDjango的POINTFEILD序列化为JSON？

我有以下型号

class Company(models.Model):
    name = models.CharField(max_length=200,default='Company',null=True)

    def __unicode__(self):
        return self.name


class Shop(models.Model):
    name = models.CharField(max_length=200,default="bla")
    address = models.CharField(max_length=300,default='blabla')
    location = models.PointField(null=True,blank=True,geography=True)
    company = models.ForeignKey(
        Company,on_delete=models.CASCADE,null=True)

以及后续的序列化器

class ShopSerializer(serializers.ModelSerializer):

    distance = serializers.DecimalField(
        source='distance.km',max_digits=10,decimal_places=2,required=False,read_only=True)

    # serialize('geojson',Shop.objects.all(),#           geometry_field='location',fields=('name','address'))

    class Meta:
        model = Shop
        fields = ['id','name','address','location','distance']
class CompanySerializer(serializers.ModelSerializer):
    shop_set = ShopSerializer(many=True)

    class Meta:
        model = Company
        fields = ['id','shop_set']

    def create(self,validated_data):
        shop_validated_data = validated_data.pop('shop_set')
        company = Company.objects.create(**validated_data)
        shop_set_serializer = self.fields['shop_set']
        for each in shop_validated_data:
            each['company'] = company
        shops = shop_set_serializer.create(shop_validated_data)
        return company

使用GeoJson我可以得到如下响应

[
    {
        "id": 1,"name": "Cosmetica","address": "somwhere","location": {
            "type": "Point","coordinates": [
                24.896,67.182
            ]
        }
    },

，但这里的point字段已转换为数组。但是我需要它是具有2个键值对的Json对象，

location:{lat,long}

任何人都可以帮忙

解决方法

您为什么不使用geos API？ https://docs.djangoproject.com/en/3.1/ref/contrib/gis/geos/#django.contrib.gis.geos.GEOSGeometry.coords

pnt.coords

geodjango geojson json