Symfony2无法保存到数据库

Question

I have a strange problem with saving to the database in Symfony2 controller. Here is the code:

$em = $this->getDoctrine()->getManager();
//$cars is taken from the entity and is not null
foreach($cars as $car) {
    $car->setHasContent('yes');
    $em->persist($car);
    $em->flush();
}

I get the following error:

Call to undefined method Symfony\Bundle\DoctrineBundle\Registry::getManager()

I can fix this by changing $em to:

$em = $this->get("doctrine.orm.entity_manager");

But then I get this error and don't know why (500 error):

ObjectManager does not support filters

Any ideas why?

If it helps anyone there is Gedmo Doctrine Extension installed, and the error points to:

vendor/gedmo-doctrine-extensions/lib/Gedmo/Sluggable/SluggableListener.php at line 523
throw new \Gedmo\Exception\InvalidArgumentException("ObjectManager does not support filters");

Answer 1

I assume you are calling the manager from a controller, so I think you may have forgotten to make your class extends Controller.

class myClass extends Controller
{
    // Your code
}