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✏️ Editing: DocumentGallery.php

<?php

namespace FileBird\Classes;

defined('ABSPATH') || exit;
use FileBird\Model\Folder as FolderModel;

class DocumentGallery
{
	protected static $instance = null;

public static function getInstance()
	{
		if (null == self::$instance) {
			self::$instance = new self;
			self::$instance->doHooks();
		}
		return self::$instance;
	}

public function dg_query(&$query, $taxa, &$excluded_keys, &$errs) {
		if (!empty($taxa["fbv"])) {
			$excluded_keys[] = "fbv";

if  (is_null(FolderModel::findById($taxa["fbv"]))) {
	            $errs[] = __( 'This folder ID does not exist, please check again.', 'filebird' );
				return;
            }

$query["fbv"] = $taxa["fbv"];
            $query["suppress_filters"] = false; 
		}
	}
}

MR SKB