Display contents of domain folder on sub domain root

Question

I have a website at root of main domain, let's call it domain(dot)com, this site runs a template based system through htaccess, similar to wordpress. On there i have a section called domain(dot)com/forum/, the folder doesn't exist as it's managed through the template system and htaccess.

I'm trying to find a solution where i create a subdomain on the same domain above and all works as if they are on domain(dot)com/forum/ but are in fact on forum(dot)domain(dot)com.

Is this in fact possible as the htaccess file on the main site controls all the structure?

I have searched everywhere from symlinks to vhosts document root but cannot find a solution to this.

Any guidance will be greatly appreciated.

Thanks

Answer 1

In the forum.domain.com public directory folder add a htaccess file and add the following:

RewriteEngine On
RewriteRule ^(.*)$ domain.com/forum/$1 [NC,L]