public function actionIncom_outcome($id = null)
 {
     $model = AssignSearch::findOne($id);
     $outgoings_model = new \app\models\Outgoings();
     $expenses_model = new \app\models\ExpensesTruck();
     $outgoings = $outgoings_model->find()->where(['assign_id' => $model->assign_id])->all();
     $expenses = $expenses_model->find()->where(['assign_id' => $model->assign_id])->all();
     $page = $this->renderPartial('_income_outcome', ['model' => $model, 'outgoings' => $outgoings, 'expenses' => $expenses]);
     $mpdf = new \mPDF('th', 'A4-P', '0', 'THSaraban');
     $mpdf->WriteHTML($page);
     $mpdf->SetDisplayMode('fullpage');
     $mpdf->Output($model->assign_id . ".pdf", "I");
 }