URI Class subfolder and Routing

[eluser]OliverHR[/eluser]
I'm a little confused, why URI library never return subfolders name when using a route.

Let me show my problem, I definded this route:

Code:

$route['product/(:num)'] = 'admin/products/detail/$1';

Where:

"admin" is a subfolder in the controllers folder.
"products" is a controller
"detail" is a function who expects a numeric parameter

I must say that everything works fine, but if i try to use the next code:

Code:

function detail($id = 0)
{
  echo '<pre>';
    print_r($this->uri->segment_array());
    print_r($this->uri->rsegment_array());
  echo '</pre>';
}

Using the url "http://localhost/product/1" I get this:

Array
(
[1] => product
[2] => 1
)

Array
(
[1] => products
[2] => detail
[3] => 1
)

And The subfolder?...


But, if I use the full url "http://localhost/admin/products/detail/1" I get:

Array
(
[1] => admin
[2] => products
[3] => detail
[4] => 1
)

Array
(
[1] => products
[2] => detail
[3] => 1
)

Thank's in advance for any help.