ZF Frontend and backend routing - zend-framework

Question

I want something that sounds fairly simple to me but appears not to be.
My problem is that I need 2 routes voor my application:
Whenever the module is admin apply the following route:
$router->addRoute(
'backend',
new Zend_Controller_Router_Route('/:module/:controller/:action/:id/:value', array('module' => 'admin', 'controller' => 'dashboard', 'action' => 'index', 'id' => ':id', 'value' => ':value'))
);
Which works great. An example url could be: http://localhost/server/domains/demo/admin/images/album/3 where admin is the module, images the controller and so on.
All I want is that when a user goes to http://localhost/server/domains/demo he is redirected to the default module, index controller and index action. Everything after demo/ should be considered a single parameter (with unknown / possible).
I tried several things, from using Route_Regex, trying (.*) or (\d+), things I found all around online. Tried switching values, making them static, turning on/off removeDefaultRouter, but nothing worked. Below you can see my current bootstrap. Any ideas?
$router = $this->frontController->getRouter();
$router->removeDefaultRoutes();
$router->addRoute(
'backend',
new Zend_Controller_Router_Route('/admin/:controller/:action/:id/:value', array('module' => 'admin', 'controller' => 'dashboard', 'action' => 'index', 'id' => ':id', 'value' => ':value'))
);
$router->addRoute(
'frontend',
new Zend_Controller_Router_Route('/default/:controller/:action/(.*)', array('module' => 'default', 'controller' => 'index', 'action' => 'index'))
);
Backend works fine, but whenon the http://localhost/server/domains/demo/ I get the following error: No route matched the request
When given an answer, please explain why, because Zend_Route has always been a little vague for me. Thanks in advance!
Temp fix
Below the temporary fix that I use. It works exactly how I want, but I still believe that the same is achievable with Zend_Route without checking if the module is admin.
$router = $this->frontController->getRouter();
$uri = explode('demo/', $_SERVER['REQUEST_URI']);
$uri = (isset($uri[1])) ? explode('/', $uri[1]) : $uri[0];
if($uri[0] == 'admin')
{
$route = new Zend_Controller_Router_Route('/:module/:controller/:action/:id/:value', array('module' => 'admin', 'controller' => 'dashboard', 'action' => 'index', 'id' => null, 'value' => null));
$router->addRoute('router', $route);
}
else
{
$route = new Zend_Controller_Router_Route('/*', array('module' => 'default', 'controller' => 'index', 'action' => 'index'));
$router->addRoute('router', $route);
}

Answer 1

It is worth doing if you really have to use this routes. For normal usage you can just generate links by
Zend_Layout::getMvcInstance()->getView()->Url(array('module' => 'admin'));
Zend_Layout::getMvcInstance()->getView()->Url(array('module' => 'default'));
and so on.
If you are not ok with this, try routes chaining:
$router = Zend_Controller_Front::getInstance()->getRouter();
$dispatcher = Zend_Controller_Front::getInstance()->getDispatcher();
$request = Zend_Controller_Front::getInstance()->getRequest();
$frontRoute = new Zend_Controller_Router_Route_Module(array(), $dispatcher, $request);
$backRoute = new Zend_Controller_Router_Route_Module(array('module' => 'admin'), $dispatcher, $request);
$route = new Zend_Controller_Router_Route('admin');
$router->addRoute('backend', $route->chain($backRoute));
$route = new Zend_Controller_Router_Route('default');
$router->addRoute('frontend', $route->chain($frontRoute));
Explenation:
Zend_Controller_Router_Route_Module is for definining modules routes for the application. By chaining it to normal route like new Zend_Controller_Router_Route('admin') you made links like /admin/[your_module_route] where [your_module_route] have defined defaults array('module' => 'admin') and can take other parameters too.
new Zend_Controller_Router_Route_Module(array(), $dispatcher, $request); is defined as an default route on the standard router.