Do you know DoctrineListener?

#symfony #doctrine #webdev

Imagine you had to monitor an entity to log when it was created or updated

Create a Note entity

<?php

namespace App\Entity;

use App\Repository\NoteRepository;
use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity(repositoryClass: NoteRepository::class)]
class Note
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;

    #[ORM\Column(type: Types::TEXT)]
    private ?string $content = null;

    #[ORM\Column(length: 255)]
    private ?string $log = null;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getContent(): ?string
    {
        return $this->content;
    }

    public function setContent(string $content): static
    {
        $this->content = $content;

        return $this;
    }

    public function getLog(): ?string
    {
        return $this->log;
    }

    public function setLog(string $log): static
    {
        $this->log = $log;

        return $this;
    }
}

Then you can create a DoctrineListener to log when its created (persist) or updated

<?php

namespace App\DoctrineListener;

use App\Entity\Conference;
use App\Entity\Note;
use Doctrine\Bundle\DoctrineBundle\Attribute\AsEntityListener;
use Doctrine\Persistence\Event\LifecycleEventArgs;
use Doctrine\ORM\Events;


#[AsEntityListener(event: Events::prePersist, entity: Note::class)]
#[AsEntityListener(event: Events::preUpdate, entity: Note::class)]
class NoteEntityListener
{
    public function prePersist(Note $note, LifecycleEventArgs $event)
    {
        $note->setLog('This is from prePersist');
    }

    public function preUpdate(Note $note, LifecycleEventArgs $event)
    {
        $note->setLog('This is from preUpdate');
    }
}