Adding a filter service provider and a permissions filter

Http/Controllers/Admin/RolesController.php

@@ -25,6 +25,7 @@ class RolesController extends AdminBaseController
         parent::__construct();
         $this->roles = Sentinel::getRoleRepository()->createModel();
         $this->permissions = $permissions;
+        $this->beforeFilter('permissions');
     }
 
     /**

Http/Controllers/Admin/UserController.php

@@ -24,6 +24,8 @@ class UserController extends AdminBaseController
     {
         parent::__construct();
 
+        $this->beforeFilter('permissions');
+
         $this->users = Sentinel::getUserRepository();
         $this->roles = Sentinel::getRoleRepository()->createModel();
     }

Http/Filters/PermissionFilter.php

+<?php namespace Modules\User\Http\Filters;
+
+use Cartalyst\Sentinel\Laravel\Facades\Sentinel;
+use Illuminate\Support\Facades\Config;
+use Illuminate\Support\Facades\Redirect;
+use Laracasts\Flash\Flash;
+
+class PermissionFilter
+{
+    public function filter($route, $request)
+    {
+        $action = $route->getActionName();
+        $actionMethod = substr($action, strpos($action, "@") + 1);
+
+        if (Sentinel::hasAccess("{$request->segment(2)}.$actionMethod"))
+        {
+            return;
+        }
+
+        Flash::error('Permission denied.');
+        return Redirect::to('/' . Config::get('core::core.admin-prefix'));
+    }
+}
\ No newline at end of file

Providers/UserFiltersServiceProvider.php

+<?php namespace Modules\User\Providers;
+
+use Illuminate\Routing\FilterServiceProvider as ServiceProvider;
+
+class UserFiltersServiceProvider extends ServiceProvider
+{
+    protected $filters = [
+        'permissions' => 'Modules\User\Http\Filters\PermissionFilter',
+    ];
+}
\ No newline at end of file