rewrite my old wordpress blog urls to new

gistfile1.txt

# part of /etc/nginx/nginx.conf

server {
    listen       80;
    server_name  vvoody.org;

    location ~ /blog[/]?$ {
        if ($query_string ~ p=([0-9]+)) {
            rewrite ^(.*) http://blog.vvoody.org/article/$arg_p? permanent;
            #set $article_id $1;
            #rewrite ^(.*) http://blog.vvoody.org/article/$article_id? permanent;
        }
        rewrite ^ http://blog.vvoody.org/ permanent;
    }
}