Nginx dynamic location path configuration

Question

Firstly I want to state that I'm rather new to nginx, I basically only know what I've learned over the last week.

That said, I currently have a Nginx server with a standard configuration of:

server {
  listen 80;
  server_name site.com;

  root /var/www/site.com/;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php;
  }

  location /microsite/first {
    try_files $uri $uri/ /microsite/first/;
  }

  location /microsite/second {
    try_files $uri $uri/ /microsite/second/;
  }

  ...
}

This works fine, although for every microsite I add to the existing ones, it requires that a new location be added referring to the path of the new microsite.

My question is: is it possible to dynamically set the location parameter in a way that it catches and references whatever sub-directory exists within the microsite/ directory?

e.g. something along the line of the rewrite rule rewrite ^(/download/.*)/media/(.*)\..*$ $1/mp3/$2.mp3 last; (taken from the nginx site) but applied to the location parameter, like:

location ~ ^/microsite/(.*)$ {
  try_files $uri $uri/ /microsite/$1/;
}

In which the $1 would catch the sub-directory name passed in (.*)? (I tried this snippet that I built refering to the answer to (another) Nginx dynamic location configuration question, although it did not work)

Also I'm not a Regex expert, I've tweaked a bit with it in the past but it was a while ago and I don't recall the precise terminology, so that may be part of the problem, perhaps?!

Anyway, all help is appreciated.
Thanks in advance!!

Answer 1

You probably need to limit the capture to the first two path segments:

location ~ ^(/microsite/[^/]+) {
    try_files $uri $uri/ $1/;
}

The [^/] character class matches anything that is not a /