在django Web应用程序中,如何为用户提供自己的子域？

ALLOWED_HOSTS = ['*.example.com']

from django.urls import path
from . import views

urlpatterns = [
    path('', views.index, name='index'),
]

def index(request):
    subdomain = request.subdomain
    # 在这里处理子域名相关的逻辑
    return HttpResponse('Hello, world!')

server {
    listen 80;
    server_name *.example.com;

    location / {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}