Django+；提供私有静态文件的nginx

我正在尝试从nginx和django服务器保护用户文件

nginx.conf：

server {

    listen 80;
    gzip off;
    expires off;

    location /static/ {
        add_header X-Static hit;
        autoindex on;
        expires off;
        root /Users/andrewshkovskii/workspace/ip_pbx/;
    }

    location / {
        proxy_pass       http://localhost:8000;
        rewrite ^/audiofiles/get/(\d+)/ /audiofiles/serve/$1/ last;
    }

    location /media/audio {
        internal;
        root   /var/ip_pbx/users;
    }
}

Django视图：

def get(self, request, *args, **kwargs):
    audio_file = self.get_object()
    ogg_file_version = audio_file.audiofileversion_set.filter(format="ogg")
    if ogg_file_version.exists():
        ogg_file_version = ogg_file_version[0]
        res = HttpResponse()
        res["Content-type"] = "audio/ogg"
        res["X-Accel-Redirect"] = ogg_file_version.file.path
        res["Content-length"] = ogg_file_version.file.size
        return res
    return Http404()

如果我尝试获取localhost/audiofiles/GET/74/，nginx将把它重写为view（/audiofiles/service/74/），view将返回响应，但返回时，它将尝试获取localhost:8000/%完整的文件路径%。。为什么？（文件存在..）

根据配置：

 server {

    listen 80;
    gzip off;
    expires off;
    error_log /usr/local/Cellar/nginx/1.2.5/logs/error.log debug;

    location /static/ {
        add_header X-Static hit;
        autoindex on;
        expires off;
        root /Users/andrewshkovskii/workspace/ip_pbx/;
    }

    location / {
        proxy_pass       http://localhost:8000;
        rewrite ^/audiofiles/get/(\d+)/ /audiofiles/serve/$1/ last;
    }

    location ~ /var/ip_pbx/users_andrewshkovskii/(\d+)/(audio|calls)/(.*) {
        internal;
        root   /;
    }
}

注意私人文件位置的re（在我的情况下…）