Adding a prefix to every URL in CakePHP

What's the cleanest way to add a prefix to every URL in CakePHP, like a language parameter? ``` http://example.com/en/controller/action http://example.com/ru/admin/controller/action ``` It needs to work with "real" prefixes like `admin`, and ideally the bare URL `/controller/action` could be redirected to `/DEFAULT-LANGUAGE/controller/action`. It's working in a retro-fitted application for me now, but it was kind of a hack, and I need to include the language parameter by hand in most links, which is not good. So the question is twofold: - What's the best way to structure Routes, so the language parameter is implicitly included by default without having to be specified for each newly defined Route? - `Router::connect('/:controller/:action/*', ...)` should implicitly include the prefix. - The parameter should be available in `$this->params['lang']` or somewhere similar to be evaluated in `AppController::beforeFilter()`. - How to get `Router::url()` to automatically include the prefix in the URL, if not explicitly specified? - `Router::url(array('controller' => 'foo', 'action' => 'bar'))` should return `/en/foo/bar` - Since `Controller::redirect()`, `Form::create()` or even `Router::url()` directly need to have the same behavior, overriding every single function is not really an option. `Html::image()` for instance should produce a prefix-less URL though. The following methods seem to call `Router::url`. - `Controller::redirect` - `Controller::flash` - `Dispatcher::__extractParams` via `Object::requestAction` - `Helper::url` - `JsHelper::load_` - `JsHelper::redirect_` - `View::uuid`, but only for a hash generation Out of those it seems the Controller and Helper methods would need to be overridden, I could live without the `JsHelper`. My idea would be to write a general function in `AppController` or maybe just in `bootstrap.php` to handle the parameter insertion. The overridden Controller and Helper methods would use this function, as would I if I wanted to manually call `Router::url`. Would this be sufficient?