Nginx rewrite in subfolder (404)

Question

I has a site host on a NGINX server which used to work fine to remove index.php in nginx site config using try_files.

But now I am going to add a blog on it, where the URL will be www.foo.com/blog, I can access the blog and use index.php?p=.

But, once I use pretty permalink with Nginx Helper, www.foo.com/blog/2013/07/bar, I get 404.

server {
  # don't forget to tell on which port this server listens
  listen 80;

  # listen on the www host
  server_name foo.com;

  # and redirect to the non-www host (declared below)
  return 301 $scheme://www.ultra-case.com$request_uri;
}

server {
  # listen 80 default_server deferred; # for Linux
  # listen 80 default_server accept_filter=httpready; # for FreeBSD
  listen 80;

  # The host name to respond to
  server_name www.foo.com;

  # Path for static files
  root /web/foo.com

  #index file
  index index.php;

  #Specify a charset
  charset utf-8;

  # Custom 404 page
  error_page 404 /404.html;

  # Uri Rewrite

  location /blog {
    index index.php;
    try_files $uri $uri/ /blog/index.php?$args;
  }

  location / {
    autoindex on;
    # This is cool because no php is touched for static content.
    # include tihe "?$args" part so non-default permalinks doesn't break when using query string
    try_files $uri $uri/ /index.php?$args;
  }
  location ~ \.php$ {
    #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    include fastcgi.conf;
    fastcgi_intercept_errors on;
    fastcgi_pass 127.0.0.1:9000;
    fastcgi_index index.php;
  }

  # Include the component config parts for h5bp
  include conf/h5bp.conf;
}

Answer 1

Think for php, rewrite is no needed with something like this:

location /app/ {
  include fastcgi_params;
  fastcgi_param  SCRIPT_FILENAME /path/to/your/app/index.php;
  fastcgi_pass php;
}

With following fastcgi pass

upstream php {
    server unix:/var/run/php5-fpm.sock;
}

Answer 2

Try this

location /api {
    # example: http://demo.com/api/channels/dmzb
    root   /data/webserver/demo.com/api/web;
    rewrite ^/api/(.*) /$1 break;
    try_files $uri $uri/ /api/index.php?$args;

    location ~ ^/api/index\.php {
        fastcgi_pass  127.0.0.1:9000;
        fastcgi_index index.php;
        include fastcgi.conf;

        # fix request_uri
        set $changed_request_uri $request_uri;
        if ($changed_request_uri ~ ^/api(.*)) {
            set $changed_request_uri $1;
        }
        fastcgi_param REQUEST_URI $changed_request_uri;

        # fix script_filename
        fastcgi_split_path_info ^(?:\/api\/)(.+\.php)(.*);
        fastcgi_param SCRIPT_FILENAME $document_root/$fastcgi_script_name;
    }
}