I'd like to offer users who sign up to a website I'm developing a custom subdomain: username.domain.com. I'd like this address to point to basically return the contents of domain.com/view/username, so I figured htaccess was the way to go!

I use CodeIgniter as a framework, and have employed the following .htaccess to basically run everything through index.php:

RewriteEngine on
RewriteCond $1 !^(index\.phps)
RewriteRule ^(.*)$ /index.php/$1 [L]

Is there a simple way to redirect these subdomain requests? If so, is it a purely .htaccess solution, or will I have to tweak server settings? I have access to cPanel, if the latter is the case.

This isn't a problem, as I can contact my host and ask that this be configured. I was just wondering exactly how to configure it, so that I can pass that information along, as well.

Perhaps you want to use NC to cater for them typing names in a different case.

It was more to fix somebody typing the wrong case url but fixing it for them.

I got everything working quite nicely, but have hit another interesting problem. This time with some Javascript (I use the Mootools library). Basically, I have a function which generates an Ajax request:

function fetch_latest_entries() {
 
   new Ajax('fetch', {
  method: 'get',
        onComplete: function() {
 
      // yadda yadda
 
        }
    }).request();
 
}

This works great when I call it from domain.com/account. However, I assign each user on my site their own subdomain, like so: username.domain.com. Within cPanel I've setup *.domain.com to point towards domain.com/user/view/{username}.

When I execute the above function from username.domain.com, Firebug returns the following:

A little snooping around on Google has led me to believe that this is because the XMLHttpRequest considers a subdomain and a domain to be different locations. How can I solve this?

I'm not sure I follow? The subdomain (username.domain.com) is a fake that points to domain.com. So there is no physical subdomain.

Sorry for being really dense, but move the query where, exactly?

I made the Ajax request url username.domain.com/fetch/personal, but sadly this still doesn't work. I'm using the following .htaccess file:

RewriteEngine on

# Prevent infinite loop
rewriteCond $1 !^index.php/user/show/

RewriteCond %1 !^www$ [NC]
RewriteCond %{HTTP_HOST} ^([^.]+)\.domain\.com 
RewriteCond %1 !^www$ [NC]
RewriteRule (.*) index.php/user/show/%1/$1 [L]

RewriteCond $1 !^(index\.php|images|robots\.txt|css|js|img|uploads|avatars)
RewriteRule ^(.*)$ /index.php/$1 [L]

(Note: I've changed the actual domain to domain.com to post here)

This basically forces: username.domain.com to point towards index.php/user/show. If I were to say go to: username.domain.com/js/fetch.js - I'm passed to index.php. I'm sure the problem stems from this. Any suggestions for an alternate .htaccess?