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我是 django 的新手，这是我第一次想部署 django 项目。我正在尝试使用 gunicorn 和 nginx 部署 django-oscar 的沙箱项目。我为 nginx 和 wsgi 使用了 oscar 的部署脚本，并修改了它们以满足我的需求，它们是：

wsgi.py：

import os
import sys
import site
import urllib

sys.stdout = sys.stderr

# Project root
root = '/home/ashkan/setak/setak/sites/sandbox'
sys.path.insert(0, root)

# Packages from virtualenv
activate_this = '/home/ashkan/setak/bin/activate_this.py'
execfile(activate_this, dict(__file__=activate_this))

# Set environmental variable for Django and fire WSGI handler
os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
import django.core.handlers.wsgi
_application = django.core.handlers.wsgi.WSGIHandler()

def application(environ, start_response):
    environ['PATH_INFO'] = urllib.unquote(environ['REQUEST_URI'].split('?')[0])
    return _application(environ, start_response)

nginx配置：

server {
    listen 80;
    server_name setakshop.ir;

    # set_real_ip_from 192.168.125.252;
    # real_ip_header X-Forwarded-For;

    # Ensure only one domain
    if ($host != 'setakshop.ir') {
        rewrite / $scheme://setakshop.ir$request_uri permanent;
    }

    access_log /home/ashkan/setak/setak/logs/nginx_access.log;
    error_log /home/ashkan/setak/setak/logs/nginx_error.log;

    gzip on;
    gzip_proxied any;
    gzip_static on;
    gzip_types text/plain application/xml application/x-javascript text/javascript text/css application/x-json application/json;

        client_max_body_size 3M;
        keepalive_timeout 5;

    location =/robots.txt {
                root /home/ashkan/setak/setak/sites/sandbox/public/static/;
                expires max;
        }
    location =/favicon.ico {
                root /home/ashkan/setak/setak/sites/sandbox/public/static/oscar/;
                expires max;
        }
        location /media/ {
                alias /home/ashkan/setak/media/latest/;
                expires max;
        }
        location /static/ {
                root /home/ashkan/setak/setak/sites/sandbox/public;
                expires max;
        }
    location / {
        uwsgi_pass unix:/home/ashkan/setak/run/latest/uwsgi.sock;
        uwsgi_send_timeout 5;
        include uwsgi_params;
        proxy_pass http://127.0.0.1:8001;
        proxy_set_header X-Forwarded-Host $server_name;
        proxy_set_header X-Real-IP $remote_addr;
        add_header P3P 'CP="ALL DSP COR PSAa PSDa OUR NOR ONL UNI COM NAV"';
    }
}

现在每当有人进入网站时我得到的错误是：

Traceback (most recent call last):
  File "/home/ashkan/setak/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 130, in handle
    self.handle_request(listener, req, client, addr)
  File "/home/ashkan/setak/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 171, in handle_request
    respiter = self.wsgi(environ, resp.start_response)
  File "/home/ashkan/setak/setak/sites/sandbox/wsgi.py", line 22, in application
    environ['PATH_INFO'] = urllib.unquote(environ['REQUEST_URI'].split('?')[0])
KeyError: 'REQUEST_URI'
[2015-05-05 16:46:04 +0000] [12506] [ERROR] Error handling request
Traceback (most recent call last):
  File "/home/ashkan/setak/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 130, in handle
    self.handle_request(listener, req, client, addr)
  File "/home/ashkan/setak/local/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 171, in handle_request
    respiter = self.wsgi(environ, resp.start_response)
  File "/home/ashkan/setak/setak/sites/sandbox/wsgi.py", line 22, in application
    environ['PATH_INFO'] = urllib.unquote(environ['REQUEST_URI'].split('?')[0])
KeyError: 'REQUEST_URI'

我打印了 environ 和 os.environ 字典，但没有看到任何带有键 REQUEST_URI 的条目。

我怎样才能解决这个问题？我应该编辑 wsgi 脚本还是应该修复 environ 字典以包含 REQUEST_URI 键？我该怎么做？

提前致谢。

更新：因为我使用 virtualenv 来部署这个项目，并且我用来激活 virtualenv 的激活脚本是 setak/bin/activate，所以我认为问题可能出在 wsgi.py 中，它设置了 activate_this 变量。但仍然不知道如何解决这个问题！

update2：这是 nginx 以前的配置，也没有工作。我是从教程中自己写的，然后当它不起作用时，我切换到 oscar 提出的版本。

server {
    server_name setakshop.ir;

    access_log off;

    location /static/ {
        alias /home/ashkan/setak/setak/sites/sandbox/static/;
    }

    location / {
        proxy_pass http://127.0.0.1:8001;
        proxy_set_header X-Forwarded-Host $server_name;
        proxy_set_header X-Real-IP $remote_addr;
        add_header P3P 'CP="ALL DSP COR PSAa PSDa OUR NOR ONL UNI COM NAV"';
    }
}
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