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How to: Implement Dynamic Route in CakePHP

I 've found a method to implement Dynamic Route in CakePHP. If we develop a CMS program using CakePHP, we often let people to define their menu code. The menu code basically is the URL path. For example: An admin create a menu named 'Milk Product ', and give this menu a code 'product '. He wish to access this menu via /product

So we can add a static route in routes.php Router::connect( '/product ', array( 'controller ' => 'product ', 'action ' => 'index '));

But one day, he want to change the menu code from 'product ' to 'milkproduct '? What to do then? Ask the site admin to edit the routes.php? Of course not.

We can use the code below to resolve this problem.

$menus = '';
Cache::delete('routemenus');
if($menus = Cache::read('routemenus') === false){
    echo 'load from db';
    $menusModel = ClassRegistry::init('Menu');
    $menus = $menusModel->find('all', array('conditions' => array('parent_id' => '1')));
    Cache::write('routemenus', $menus);
}

foreach($menus as $menuitem){
    Router::connect('/' . $menuitem['Menu']['code'] . '/:action/*', array('controller' => $menuitem['MenuType']['code'], 'action' => 'index'));
}

Router::connect('/', array('controller' => 'homepage', 'action' => 'index'));

We have 2 menu related tables: menus and menu_types. Their structure as belows:

menus
    id
    menu_type_id
    parent_id
    lft
    rght
    code
    name
    created
    modified

menu_types
    id
    code
    name
    created
    modified

The code in menu_types means the controller name, and the code in menus means the path.