openvk/Web/Models/Entities/Traits/TAttachmentHost.php

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2020-06-07 19:04:43 +03:00
<?php declare(strict_types=1);
namespace openvk\Web\Models\Entities\Traits;
use openvk\Web\Models\Entities\Attachable;
use Chandler\Database\DatabaseConnection;
trait TAttachmentHost
{
private function composeAttachmentRequestData(Attachable $attachment): array
{
return [
"target_type" => get_class($this),
"target_id" => $this->getId(),
"attachable_type" => get_class($attachment),
"attachable_id" => $attachment->getId(),
];
}
function getChildren(): \Traversable
{
$sel = $this->getRecord()
->related("attachments.target_id")
->where("attachments.target_type", get_class($this));
foreach($sel as $rel) {
$repoName = $rel->attachable_type . "s";
$repoName = str_replace("Entities", "Repositories", $repoName);
$repo = new $repoName;
yield $repo->get($rel->attachable_id);
}
}
function attach(Attachable $attachment): void
{
DatabaseConnection::i()->getContext()
->table("attachments")
->insert($this->composeAttachmentRequestData($attachment));
}
function detach(Attachable $attachment): bool
{
$res = DatabaseConnection::i()->getContext()
->table("attachments")
->where($this->composeAttachmentRequestData($attachment))
->delete();
return $res > 0;
}
function unwire(): void
{
$this->getRecord()
->related("attachments.target_id")
->where("attachments.target_type", get_class($this))
->delete();
}
}