/**
  * @return \yii\db\ActiveQuery
  */
 public function getBillingInfos()
 {
     return $this->hasMany(BillingInfo::className(), ['customer_usr_name' => 'customer_user_name']);
 }
 public function actionNewcard()
 {
     $model1 = new BillingInfo();
     $db = Yii::$app->db;
     //echo $model1->load(Yii::$app->request->post());
     //echo $model1->validate();
     if ($model1->load(Yii::$app->request->post())) {
         $billing_id = $model1->billing_id;
         //echo $model1->customer_usr_name;
         $db->createCommand('DELETE FROM billing_info WHERE billing_id =' . $billing_id . '')->execute();
         $model1->save();
         echo $model1->billing_id . '_' . $model1->creditcard_no . '_' . $model1->creditcard_expdate;
     }
 }