Routing problems in ZF2 : Controller not mapped - php

Question

I'm trying to create a simple CRUD in Zf2 to get to know it and I'm having problems routing the only controller I have. I have this error;
"The requested controller could not be mapped to an existing controller class".
I'm trying to call this route : http://zf2.local/Listapp
This is my structure :
module/Listapp/src/Listapp/Controller/ListappController.php
The namespace is namespace Listapp\Controller;
This is my autoloader config :
public function getAutoloaderConfig()
{
return array(
'Zend\Loader\StandardAutoloader' => array(
'namespaces' => array(
// Autoload Listapp classes
__NAMESPACE__ => __DIR__ . '/src/' . __NAMESPACE__,
// Autoload ListappController classes
'ListappController' => __DIR__ . '/src/Listapp',
)
)
);
}
And this is my module.config.php :
return array(
'controllers' => array(
'invokables' => array(
'Listapp\Controller\Listapp' => 'Listapp\Controller\ListappController'
)
),
'router' => array(
'routes' => array(
'listapp' => array(
'type' => 'segment',
'options' => array(
'route' => '/[:controller[/:action][/:id]]',
'constraints' => array(
'controller' => '[a-zA-Z][a-zA-Z0-9_-]*',
'action' => '[a-zA-Z][a-zA-Z0-9_-]*',
'id' => '[0-9]+',
),
'defaults' => array(
'controller' => 'Listapp\Controller\Listapp',
'action' => 'index',
),
),
),
),
),
'view_manager' => array(
'template_path_stack' => array(
'Listapp' => __DIR__ . '/../view',
),
), );
Any help would be appreciated thanks !
EDIT:
This is the code in my controller (minus the other CRUD functions) :
namespace Listapp\Controller;
use Zend\Mvc\Controller\AbstractActionController;
class ListappController extends AbstractActionController
{
public function indexAction()
{
}
}

Answer 1

So just to further explain my comment, by including a :controller segment in your route, you've told ZF to try and match the first thing in your URL to something that the controller manager can load (in your case, one of the keys in you controller invokables). The controller default you defined in your route would only apply if you visited http://zf2.local/.
So for you, the quickest fix is to change your configuration to:
'controllers' => array(
'invokables' => array(
'Listapp' => 'Listapp\Controller\ListappController'
)
),
'Listapp' in the URL will then match this controller, and everything will work as you expect.
In general it makes things clearer if you avoid using :controller in routes and have at least one route per controller instead, e.g.:
'controllers' => array(
'invokables' => array(
'Listapp\Controller\Listapp' => 'Listapp\Controller\ListappController'
)
),
'router' => array(
'routes' => array(
'listapp' => array(
'type' => 'segment',
'options' => array(
'route' => '/listapp[/:action[/:id]]',
'constraints' => array(
'action' => '[a-zA-Z][a-zA-Z0-9_-]*',
'id' => '[0-9]+',
),
'defaults' => array(
'controller' => 'Listapp\Controller\Listapp',
'action' => 'index',
),
),
),
),
),