Management controllers: move table queries into models

models/Asset.php

@@ -680,6 +680,23 @@ class Asset
 			FROM assets');
 	}
 
+	public static function getOffset($offset, $limit, $order, $direction)
+	{
+		return Registry::get('db')->queryAssocs('
+			SELECT a.id_asset, a.subdir, a.filename,
+				a.image_width, a.image_height, a.mimetype,
+				u.id_user, u.first_name, u.surname
+			FROM assets AS a
+			LEFT JOIN users AS u ON a.id_user_uploaded = u.id_user
+			ORDER BY {raw:order}
+			LIMIT {int:offset}, {int:limit}',
+			[
+				'order' => $order . ($direction == 'up' ? ' ASC' : ' DESC'),
+				'offset' => $offset,
+				'limit' => $limit,
+			]);
+	}
+
 	public function save()
 	{
 		if (empty($this->id_asset))