InvalidArgumentException in ControllerResolver in Silex - php

Question

I'm newbie in working with framework and Silex,
I Trying to work with Silex and write my first project.
I use this silex-bootstrap : https://github.com/fbrandel/silex-boilerplate
and now in my app/app.php :
<?php
require __DIR__.'/bootstrap.php';
$app = new Silex\Application();
$app->register(new Silex\Provider\ServiceControllerServiceProvider());
// Twig Extension
$app->register(new Silex\Provider\TwigServiceProvider(), array(
'twig.path' => __DIR__.'/views',
));
// Config Extension
$app->register(new Igorw\Silex\ConfigServiceProvider(__DIR__."/config/config.yml"));
$app->get('/admin', new App\Controller\Admin\AdminDashboard());
return $app;
and in app/Controller/Admin/AdminDashboard.php :
<?php
namespace App\Controller\Admin;
use Silex\Application;
use Silex\ControllerProviderInterface;
use Silex\ControllerCollection;
class AdminDashboard implements ControllerProviderInterface {
function __construct()
{
return "Dashboard";
}
function index()
{
return "Index Dashboard";
}
public function connect(Application $app)
{
return "OK";
}
}
When I trying to access to site I get this error:
http://localhost/project/public
InvalidArgumentException in ControllerResolver.php line 69:
Controller "App\Controller\Admin\AdminDashboard" for URI "/admin" is not callable.
What should I do ?

Answer 1

You're trying to use a controller provider as the actual controller. These are two different things. The provider simply registers controllers with your silex app. Your provider should look something like this:
namespace App\Controller\Admin;
use Silex\Application;
use Silex\ControllerProviderInterface;
class AdminDashboardProvider implements ControllerProviderInterface
{
public function connect(Application $app)
{
$controllers = $app['controllers_factory']();
$controllers->get('/', function() {
return 'Index Dashboard';
});
return $controllers;
}
}
Then you should mount that controller provider to your app in app/app.php.
$app->mount('/admin', new AdminDashboardProvider());
Obviously, this is not very elegant once you get more than a few controllers or if your controllers get big. That's where ServiceControllerServiceProvider comes in. It allows your controllers to be separate classes. I typically use a pattern like this:
<?php
namespace App\Controller\Admin;
use Silex\Application;
use Silex\ControllerProviderInterface;
class AdminDashboardProvider implements ControllerProviderInterface, ServiceProviderInterface
{
public function register(Application $app)
{
$app['controller.admin.index'] = $app->share(function () {
return new AdminIndexController();
});
}
public function connect(Application $app)
{
$controllers = $app['controllers_factory']();
$controllers->get('/', 'controller.admin.index:get');
return $controllers;
}
public function boot(Application $app)
{
$app->mount('/admin', $this);
}
}
The controller looks like this:
namespace App\Controller\Admin;
class AdminIndexController
{
public function get()
{
return 'Index Dashboard';
}
}
Then you can register it with your app in app/app.php like:
$app->register(new AdminDashboardProvider());