Backend\Modules\Pages\Actions\Delete::execute PHP Метод

    public function execute()
    {
        // get parameters
        $this->id = $this->getParameter('id', 'int');
        // does the item exist
        if ($this->id !== null && BackendPagesModel::exists($this->id)) {
            // call parent, this will probably add some general CSS/JS or other required files
            parent::execute();
            // init var
            $success = false;
            // cannot have children
            if (BackendPagesModel::getFirstChildId($this->id) !== false) {
                $this->redirect(BackendModel::createURLForAction('Edit') . '&error=non-existing');
            }
            $revisionId = $this->getParameter('revision_id', 'int');
            if ($revisionId == 0) {
                $revisionId = null;
            }
            // get page (we need the title)
            $page = BackendPagesModel::get($this->id, $revisionId);
            // valid page?
            if (!empty($page)) {
                // delete the page
                $success = BackendPagesModel::delete($this->id, null, $revisionId);
                // trigger event
                BackendModel::triggerEvent($this->getModule(), 'after_delete', array('id' => $this->id));
                // delete search indexes
                BackendSearchModel::removeIndex($this->getModule(), $this->id);
                // build cache
                BackendPagesModel::buildCache(BL::getWorkingLanguage());
            }
            // page is deleted, so redirect to the overview
            if ($success) {
                $this->redirect(BackendModel::createURLForAction('Index') . '&id=' . $page['parent_id'] . '&report=deleted&var=' . rawurlencode($page['title']));
            } else {
                $this->redirect(BackendModel::createURLForAction('Edit') . '&error=non-existing');
            }
        } else {
            $this->redirect(BackendModel::createURLForAction('Edit') . '&error=non-existing');
        }
    }