Adding a base filter class

Http/Filters/PermissionFilter.php

+<?php namespace Modules\Core\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'));
+    }
+}
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