如何从Django访问postgis数据库中的点？

DATABASES = {
    'default': {
        'ENGINE': 'django.contrib.gis.db.backends.postgis',
        'NAME': 'your_database_name',
        'USER': 'your_username',
        'PASSWORD': 'your_password',
        'HOST': 'your_host',
        'PORT': 'your_port',
    }
}

from django.contrib.gis.db import models

class PointModel(models.Model):
    point = models.PointField()

python manage.py makemigrations
python manage.py migrate

from django.contrib.gis.geos import Point
from .models import PointModel

# 创建一个点对象
point = Point(x=1.0, y=2.0)

# 保存点对象到数据库
point_model = PointModel(point=point)
point_model.save()

# 查询点对象
points = PointModel.objects.all()