CakePHP routes regular expression for unicode - regex

Question

I want to do the following change in CakePHP routes. Any word or group of words (separated by hyphen) after a website URL like example.com/someword or example.com/some-word should be redirected to controller => posts, action => view. But my problem is that the word(s) should be in unicode. I have tried this regular expression for URL text, but it does not work.
Router::connect ( '/:link', array ('controller' => 'posts', 'action' => 'view' ), array ('pass' => array ('link'), 'link' => '/^['.json_decode('"\u0531"').'-'.json_decode('"\u0587"').'-]+$/u' ) );
I want to mention though, that my regex
'/^['.json_decode('"\u0531"').'-'.json_decode('"\u0587"').'-]+$/u',
works just fine if I am about to do some usual preg_match like
$regg = '/^['.json_decode('"\u0531"').'-'.json_decode('"\u0587"').'-]+$/u';
if (preg_match($regg, "my unicode string", $match)) {
var_dump($match); // outputs string as expected
}
die;
EDIT
I end up having this code
Router::connect ( '/:link', array ('controller' => 'posts', 'action' => 'view' ), array ('pass' => array ('link'), 'link' => '((?![a-zA-Z]).)+' ) );
like making my url to contain everything, but English letters, but this is not the thing I need, if I have 2 or more different languages than English - this method won't work. So, I want to send each language's word into separate action.
cake version 2.x
EDIT 2
There are alternative solutions, like in answers below, to bypass the question, but I am looking for the exact way of doing what I need.
Thanks

Answer 1

From http://en.wikipedia.org/wiki/Query_string at URL encoding paragraph you can't use these chars on a url query string:
In particular, encoding the query string uses the following rules:
Letters (A–Z and a–z), numbers (0–9) and the characters '.','-','~' and '_' are left as-is
SPACE is encoded as '+' or "%20" [8]
All other characters are encoded as %HH hex representation with any non-ASCII characters first encoded as UTF-8 (or other specified
encoding)
If you have two (or more) languages you can consider add on posts table one slug field for each language, for example with english and russian:
posts
id
title_eng
title_rus
slug_eng
slug_rus
On Post.php beforeValidate or beforeSave:
if(isset($this->data['Post']['title_eng'])){
$this->data['Post']['slug_eng'] = Inflector::slug(strtolower($this->data['Post']['title_eng']), '-');
}
if(isset($this->data['Post']['title_rus'])){
$this->data['Post']['slug_rus'] = Inflector::slug(strtolower($this->data['Post']['title_rus']), '-');
}
The link inside a view:
echo $this->Html->link($post['Post']['title_eng'], array('controller' => 'posts', 'action' => 'view', 'slug_eng' => $post['Post']['slug_eng']));
echo $this->Html->link($post['Post']['title_rus'], array('controller' => 'posts', 'action' => 'view', 'slug_rus' => $post['Post']['slug_rus']));
The route:
Router::connect('/posts/:slug_eng', array('controller' => 'posts','action' => 'view', 'eng'), array('pass' => array('slug_eng'), 'slug_eng' => '[a-zA-Z0-9]+'));
Router::connect('/ru/posts/:slug_rus', array('controller' => 'posts','action' => 'view', 'rus'), array('pass' => array('slug_rus'), 'slug_rus' => '[a-zA-Z0-9]+'));
The controller Posts:
public function view($locale, $slug){
....
validate and sanitize here
...
$post = $this->Post->find('first', array('conditions' => array('slug_' . $locale => $slug)));
....
}

Answer 2

I suggest to use wildcard
Router::connect('/*', array('controller' => 'posts', 'action' => 'view'));
Any other routes can be added before this line, for example
Router::connect('/:digits', array('controller' => 'posts', 'action' => 'view'), array('pass' => array('digits'), 'digits' => '/d+');
Router::connect('/*', array('controller' => 'posts', 'action' => 'view'));