zf2 matching language in url route - localization

Question

how is it possible to match url like www.mydomain.com/en/aboutus to
controller -> index
action -> aboutus
lang -> en
in zf2 module routing config ?
in zf1 we fix that by something like this
$route = new Zend_Controller_Router_Route(
'/contact/:lang',
array(
'module' => 'default',
'controller' => 'contact',
'action' => 'index'
)
);
but the aproeach is something else
we want first determine what the language is in url then look into what controller or action user is requesting

Answer 1

zf2 has hirachy support in routers so you can build your routes like a tree
for your situation you have to create a parent route that match lang in url for example
www.mydomain.com/en or www.mydomain.com/fa or www.mydomain.com/de or ....
then in it children write route for others
for code example :
'langroute' => array(
'type' => 'Segment',
'options' => array(
'route' => '/[:lang]',
'defaults' => array(
'lang' => 'en',
),
'constraints' => array(
'lang' => '[a-zA-Z][a-zA-Z0-9_-]*',
),
),
'may_terminate' => true,
'child_routes' => array(
'home' => array(
'type' => 'Zend\Mvc\Router\Http\Literal',
'options' => array(
'route' => '/',
'defaults' => array(
'controller' => 'Application\Controller\Index',
'action' => 'index',
),
),
),
// The following is a route to simplify getting started creating
// new controllers and actions without needing to create a new
// module. Simply drop new controllers in, and you can access them
// using the path /application/:controller/:action
'aboutus' => array(
'type' => 'Zend\Mvc\Router\Http\Literal',
'options' => array(
'route' => '/aboutus',
'defaults' => array(
'controller' => 'Application\Controller\Index',
'action' => 'aboutus',
),
),
),
),
as you can see the langrout match the en de fa or ... lang text
then the childern route check for inner page
in this example the url www.mydomain.com/en/ match the lang en and the route home

Answer 2

please add this code in your modules module.config.php
return array(
'router' => array(
'routes' => array(
// The following is a route to simplify getting started creating
// new controllers and actions without needing to create a new
// module. Simply drop new controllers in, and you can access them
// using the path /Module_Name/:controller/:lang/:action
'your_route_name_here' => array(
'type' => 'Literal',
'options' => array(
'route' => '/',
'defaults' => array(
'__NAMESPACE__' => 'Module_Name\Controller',
'controller' => 'Index',
'action' => 'index',
),
),
'may_terminate' => true,
'child_routes' => array(
'default' => array(
'type' => 'Segment',
'options' => array(
'route' => '/[:controller][/:lang][/:action]',
'constraints' => array(
'controller' => '[a-zA-Z][a-zA-Z0-9_-]*',
'lang' => '[a-zA-Z][a-zA-Z0-9_-]*',
'action' => '[a-zA-Z][a-zA-Z0-9_-]*',
),
'defaults' => array(
'controller' => 'Index',
'lang' => 'en',
'action' => 'index',
),
),
),
),
),
),
),
);