Help with a hook needed

[shalmaxb]

Hello,

I have a custom entity, which has a file field. The file, I want here is an attachment in documents. The record in the custom entity has one particular file and so I created a 1:1 relationship.
Manually this works, but I do not get to link the file automatically, when uploaded. The record in the custom entity already exists and after that I will upload the file into documents.
I tried with a formula record\relate(), but this did not work.
The documents and the target entity have one common field value. documents = name, and in the custom entity I created a field, which reads the fileName, which then gets the same value as the name field in documents.

Entities: Document, CFoto
common fields: name, fotoDateiname
Link: cDatensatzFoto (1:1 relationship left from Document)

I the tried my luck (because I am no developer) with a hook from documents to the custom entity. Here my code for that:

<?php
namespace Espo\Custom\Hooks\Document;

use Espo\ORM\Entity;
use Espo\Core\Container;
use Espo\Core\Exceptions\Error;

class LinkFotoHook
{
private $entityManager;

public function __construct(Container $container)
{
$this->entityManager = $container->get('entityManager');
}

/**
* @param array<string, mixed> $options
*/
public function afterSave(Entity $entity, array $options): void
{
if (array_key_exists('skipHooks', $options) && $options['skipHooks']) {
return;
}

$documentName = $entity->get('name');
$linkName = 'cDatensatzFoto';

if ($documentName) {
$foto = $this->entityManager->getRepository('CFoto')->findOne([
'where' => [
'fotoDateiname' => $documentName
]
]);

if ($foto) {
$entity->set($linkName, $foto);
$this->entityManager->saveEntity($entity, ['setForceUpdate' => true, 'skipHooks' => true]);
}
}
}
}

There is no error, but no result as well. Is there anything wrong in the hook?

[yuri]

Fixed. Not tested.

<?php
namespace Espo\Custom\Hooks\Document;

use Espo\ORM\Entity;
use Espo\ORM\EntityManager;

class LinkFotoHook
{
    public function __construct(private EntityManager $entityManager)
    {}

    public function afterSave(Entity $entity, array $options): void
    {
        if (array_key_exists('skipHooks', $options) && $options['skipHooks']) {
            return;
        }

        $documentName = $entity->get('name');

        if (!$documentName) {
            return;
        }

        $foto = $this->entityManager
            ->getRDBRepository('CFoto')
            ->where(['fotoDateiname' => $documentName])
            ->findOne();

        if (!$foto) {
            return;
        }

        $linkName = 'cDatensatzFoto';

        $entity->set($linkName . 'Id', $foto->getId());

        $this->entityManager->saveEntity($entity, ['skipHooks' => true]);
    }
}

[shalmaxb]

@yuri,
thank you very much for your help.

tested right now:
- on creating a new document, nothing happens, no link is created in neither entity
- when I change a value from one field (e.g. expiration date) in the recently created document, the record id (not the name) of the linked entity appears.
- the linked document does not appear in the linked entity
- when I execute a browser refresh, the link in documents is gone.

[yuri]

Maybe this version will work. Changed to the before save hook.

<?php
namespace Espo\Custom\Hooks\Document;

use Espo\ORM\Entity;

class LinkFotoHook
{
    public function __construct()
    {}

    public function beforeSave(Entity $entity, array $options): void
    {
        $documentName = $entity->get('name');

        if (!$documentName) {
            return;
        }

        $foto = $this->entityManager
            ->getRDBRepository('CFoto')
            ->where(['fotoDateiname' => $documentName])
            ->findOne();

        if (!$foto) {
            return;
        }

        $linkName = 'cDatensatzFoto';

        $entity->set($linkName . 'Id', $foto->getId());
    }
}

[shalmaxb]

Throws error:
[2025-08-27 08:34:24] DEBUG: API (403) GET /Attachment; Route pattern: /{controller}; Route params: Array ( [controller] => Attachment [action] => index )
[2025-08-27 08:34:24] WARNING: (403) :: GET /Attachment :: /var/www/vhosts/kunstservice.net/fotos.weblaboratorio.de/application/Espo/Controllers/Attachment.php(44)
[2025-08-27 08:34:25] WARNING: E_WARNING: Undefined property: Espo\Custom\Hooks\Document\LinkFotoHook::$entityMa nager
[2025-08-27 08:34:25] ERROR: Slim Application Error Type: Error Code: 0 Message: Call to a member function getRDBRepository() on null File:

[shalmaxb]

Now it works, there was a wrong 1:1 relationship (had to be left and I put right).