События для управления превью изображений для minishop2 MODX

generatevter.php

<?php
/**
 * Created by Andrey Stepanenko.
 * User: webnitros
 * Date: 06.02.2019
 * Time: 18:38
 */

switch ($event->name) {
    case 'OnMediaSourceGetProperties':
        // Автоматчиски убирает наложение водяного знака на фотографию
        if (isset($_REQUEST['msgs_upload'])) {
            if (isset($scriptProperties['properties'])) {
                $properties = $this->modx->fromJSON($scriptProperties['properties']);
                if (isset($properties['msGallerySearch']) and (isset($properties['msGallerySearch']['value']) and $properties['msGallerySearch']['value'] == 1)) {
                    if (isset($properties['thumbnails']) and isset($properties['thumbnails']['value'])) {
                        $thumbnails = $this->modx->fromJSON($properties['thumbnails']['value']);
                        foreach ($thumbnails as $key => $params) {
                            if (isset($params['fltr'])) {
                                unset($thumbnails[$key]['fltr']);
                            }
                        }
                        $properties['thumbnails']['value'] = $this->modx->toJSON($thumbnails);
                    }
                }

                $this->modx->event->output($this->modx->toJson($properties));
                return $properties;
            }
        }
        break;
    case 'OnMODXInit':
        // Блокировка генерации превью
        if (isset($_REQUEST['action']) and isset($_REQUEST['method'])) {
            if (($_REQUEST['action'] == 'mgr/gallery/multiple' and $_REQUEST['method'] == 'generate') or ($_REQUEST['action'] == 'mgr/controller/product/multiple' and $_REQUEST['method'] == 'imagegeneration')) {
                exit($modx->toJSON(array(
                    'success' => false,
                    'message' => 'Обновление превью запрещено',
                    'object' => array()
                )));
            }
        }

        break;
}