"Fatal error: Class not Found" in Symfony2

Question

This is NewEventController.php:

namespace Passtuff\RestBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Response;
use Passtuff\RestBundle\Entity\Event;

class NewEventController extends Controller
{   
    public function createAction()
    {
        $event = new Event(); //line 14

        //...
    }

}

and this is Event.php

namespace Passtuff\RestBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="event")
 */
class Event {
    //...    
}

I get this error:

Fatal error: Class 'Passtuff\RestBundle\Entity\Event' not found in /home/mattia/sites/Symfony/src/Passtuff/RestBundle/Controller/NewEventController.php on line 14

Why?

Answer 1

The problem was that the Entity directory had wrong permissions.

Setting those permissions to 775 solved the problem.

Answer 2

try clearing your cache in app/cache and make sure you have added your bundle to kernel.

Answer 3

You need to make sure you have the PasstuffRestBundle registered in the AppKernel.php file, inside your application directory:

class AppKernel extends Kernel
{
    // ...

    public function registerBundles()
    {
        $bundles = [
            new Passtuff\RestBundle\PasstuffRestBundle(),
        ];
    }
}

Then you need to make sure your bundle is in the right directory and follows the right conventions, in this case, PSR-0 conventions:

app/
src/
    Passtuff/
        RestBundle/
            PasstuffRestBundle.php
web/

For more information, check out the official docs on best practices for structuring bundles.