Backend\Modules\FormBuilder\Actions\ExportData::execute PHP Method

    public function execute()
    {
        $this->id = $this->getParameter('id', 'int');
        // does the item exist
        if ($this->id !== null && BackendFormBuilderModel::exists($this->id)) {
            parent::execute();
            $this->setFilter();
            $this->setItems();
            BackendCSV::outputCSV(date('Ymd_His') . '.csv', $this->rows, $this->columnHeaders);
        } else {
            // no item found, redirect to index, because somebody is fucking with our url
            $this->redirect(BackendModel::createURLForAction('Index') . '&error=non-existing');
        }
    }