Rewriting rules for language virtual folder

[eluser]kakawett[/eluser]
Hi,

All my urls are like this : localhost/controller/function, except for the pages I need an ID.

I have 2 questions.

1. If I am using an ID like this : http://localhost/blog/post/1, I get the id with $this->uri->segment(3);, is there a better way to do it ? something a little bit cleaner ?

2. I would like to insert the language code in the url like this : /lg/controller/function (/id)

for example :

http://localhost/ch_DE/about/informations and to get my variable ch_DE...

but I don't know what to change in routes configuration file ... or htaccess ?
and I don't know how to get the variable in my PHP script using $this->uri ?

I have this htaccess :
RewriteEngine on
RewriteCond $1 !^(index\.php|misc|robots\.txt)
RewriteRule ^(.*)$ /index.php/$1 [L]

Thanks in advance.

[eluser]n0xie[/eluser]
1. I prefer this :

Code:

controller Blog extends Controller {
function post($post_id = NULL) {}

2. Take a look here : i18n support or URI_Language_Identifier

[eluser]kakawett[/eluser]
1) What ?? I'm just asking for something else than $this->uri->segment(3) to get the ID

2) Thanks, I guess it's what I need - gotta try.

[eluser]n0xie[/eluser]
[quote author="kakawett" date="1254336067"]1) What ?? I'm just asking for something else than $this->uri->segment(3) to get the ID
[/quote]

And that's exactly what my example does. It will fill in the ID in the variable $post_id, unless you don't supply one; then it will default to NULL which is easy to track using is_null.

[eluser]kakawett[/eluser]
Yeah but where is $post_id defined ? I don't, does CodeIgniter alone ?

I just tried, it says "$post_id undefined" or something like that.

[eluser]n0xie[/eluser]

Code:

controller Blog extends Controller {
function post($post_id = NULL)
{
  var_dump($post_id);
}

Now go to http://localhost/blog/post/1