public function actionReceipt($id = null) { $model = AssignSearch::findOne($id); $page = $this->renderPartial('_receipt', ['model' => $model]); $mpdf = new \mPDF('th', 'A4-P', '0', 'THSaraban'); $mpdf->WriteHTML($page); $mpdf->SetDisplayMode('fullpage'); $mpdf->Output($model->assign_id . ".pdf", "I"); }