можно перенаправлять все запросы с русскими буквами на контроллер, который их будет разбирать
$route['([-_.,a-z0-9а-я/]+)'] = "router/$1";
да, и еще нужно расширить модуль Routes, т.к. там по умолчанию нет поддержки UTF. Сохраняем следующее в application/core/MY_Router.php
<?php
class MY_Router extends CI_Router
{
/**
* Parse Routes
*
* This function matches any routes that may exist in
* the config/routes.php file against the URI to
* determine if the class/method need to be remapped.
*
* @access private
* @return void
*/
function _parse_routes()
{
// Turn the segment array into a URI string
$uri = implode('/', $this->uri->segments);
// Is there a literal match? If so we're done
if (isset($this->routes[$uri]))
{
return $this->_set_request(explode('/', $this->routes[$uri]));
}
// Loop through the route array looking for wild-cards
foreach ($this->routes as $key => $val)
{
// Convert wild-cards to RegEx
$key = str_replace(':any', '.+', str_replace(':num', '[0-9]+', $key));
// ADDED STRING
$uri = urldecode($uri);
// Does the RegEx match?
if (preg_match('#^'.$key.'$#ui', $uri))
{
// Do we have a back-reference?
if (strpos($val, '$') !== FALSE AND strpos($key, '(') !== FALSE)
{
$val = preg_replace('#^'.$key.'$#ui', $val, $uri);
}
return $this->_set_request(explode('/', $val));
}
}
// If we got this far it means we didn't encounter a
// matching route so we'll set the site default route
$this->_set_request($this->uri->segments);
}
}
?>
