NginX与FastCGI和WordPress在一个子目录中-“；没有指定输入文件“；

我正试图将一个WordPress博客迁移到我网站的子目录中（例如.com/blog/）。使用NginX和FastCGI，我已经设法使整个WordPress网站在8080端口上工作，但一旦我尝试应用规则将其放在/blog中，我就会得到"未指定输入文件"

我想，因为我可以让PHP和WordPress工作，我可以假设我的安装或相关文件夹的权限没有问题。

这就是我的虚拟主机的样子（我在"/"上运行一个rails站点）：

    server {
    listen       80;
    server_name  example.com localhost;
    #charset koi8-r;
    #access_log  logs/host.access.log  main;
    location /blog/ {
        root /home/deploy/www/blog.example.com/html;
        index index.php;
        try_files $uri $uri/ /blog/index.php;
    }
    location ~ '.php$ {
        root /home/deploy/www/blog.example.com/html;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
    location / {
        root   /home/deploy/www/example.com/public;
        passenger_enabled on;
        index  index.html index.htm;
    }

我也尝试过这种配置以获得相同的结果：

    location ~ ^/blog/.*('.php)?$ {
           fastcgi_split_path_info ^(.+'.php)(.*)$;
           root   /home/deploy/www/blog.example.com/html;
           try_files $uri =404;
    #        fastcgi_split_path_info ^(/blog/.+'.php)(.*)$;
            #fastcgi_split_path_info ^(.+'.php)(/.+)$;
            #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
            include fastcgi_params;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    #       fastcgi_intercept_errors on;
          fastcgi_pass 127.0.0.1:9000;
    }

我做错了什么？