How to transfer the event system from OpenCart 3.0 to 2.3.0.2?

Question

opencart

Hello everyone
In the extension ported from opencart 3.0 to 2.3, this piece of code does not work:

public function install()
    {
        if (!$this->model_setting_event->getEventByCode('travesty_admin_column_left')) {
            $code = "travesty_admin_column_left";
            $trigger = "admin/view/common/column_left/before";
            $action = "extension/module/travesty/menu";
            $this->model_setting_event->addEvent($code, $trigger, $action);

            $code = "travesty_footer";
            $trigger = "catalog/view/common/footer/before";
            $action = "extension/module/travesty/footer";
            $this->model_setting_event->addEvent($code, $trigger, $action);

            $code = "travesty_header";
            $trigger = "catalog/view/common/header/before";
            $action = "extension/module/travesty/header";
            $this->model_setting_event->addEvent($code, $trigger, $action);
        }

    }

    public function uninstall()
    {
        $this->model_setting_event->deleteEventByCode('travesty_admin_column_left');
        $this->model_setting_event->deleteEventByCode('travesty_footer');
        $this->model_setting_event->deleteEventByCode('travesty_header');
    }

According to the documentation: https://github.com/opencart/opencart/wiki/Events-System
I actually have to add event loading, and change the event removal method. Everything else should work exactly the same, but the internal error fires. And I don't understand why. Error_log shows nothing on this account.

Answer 1

it's smarter to upgrade 2.3 to 3, less problems, more value for the future