Argument 3 passed to Doctrine\ORM\Event\PreUpdateEventArgs::__construct() must be of the type array, null given, called in UnitOfWork.php on line 1060

Question

Catchable Fatal Error: Argument 3 passed to Doctrine\ORM\Event\PreUpdateEventArgs::__construct() must be of the type array, null given, called in /srv/mysite/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 1060 and defined

In controller

removeExpireProducts();
$em->flush();

Inside my service:

function removeExpireProducts()
{
    foreach ($products as $product) {
         $this->productRemover->removeProduct($product);
    }
}

productRemover class:
public function removeProduct(Product $product)
{

    $newOffer =
        $this->offerGroup
        ->createOffer($product);

    if (null !== $newOffer) {
        $this->em->persist($newOffer);
        $this->em->flush();
    }

    $this->em->remove($product);
}

I mean [this](http://symfony.com/doc/current/doctrine/event_listeners_subscribers.html) some services tagged as `doctrine.event_listener` — Matteo, May 18 '17 at 09:46
@Matteo I have not used any doctrine.event_listener its automatic throwing error. — Ricky ponting, May 18 '17 at 09:48
Please include `productRemover` class and `removeProduct` method in your question. It's possible you unnecessary `flush()` going on Lifecycle Events — Łukasz D. Tulikowski, May 18 '17 at 09:57

score 3 · Accepted Answer · answered May 18 '17 at 11:27

Move flush() to the bottom like this:

public function removeProduct(Product $product)
{
    $newOffer =
        $this->offerGroup
        ->createOffer($product);

    if (null !== $newOffer) {
        $this->em->persist($newOffer);
    }

    $this->em->remove($product);
    $this->em->flush();
}

And in you controller remove $em->flush();

Than refactor your code to avoid executing flush() in this loop:

foreach ($products as $product) {
     $this->productRemover->removeProduct($product);
}

Argument 3 passed to Doctrine\ORM\Event\PreUpdateEventArgs::__construct() must be of the type array, null given, called in UnitOfWork.php on line 1060

1 Answers1