public function actionCreateparent() { $model = new Kategoricus(); if ($model->load(Yii::$app->request->post())) { $data = Kategoricus::find()->count(); if ($data == 0) { $model->CUST_KTG_PARENT = 1; } else { $datax = Kategoricus::find()->MAX('CUST_KTG'); $model->CUST_KTG_PARENT = $datax + 1; } if ($model->validate()) { $model->CREATED_BY = Yii::$app->user->identity->username; $model->CREATED_AT = date("Y-m-d H:i:s"); if ($model->save()) { echo 1; } else { echo 0; } } } else { return $this->renderAjax('_form', ['model' => $model]); } }