Update README.md

Only one case of update

README.md

@@ -154,83 +154,15 @@ class CustomerController extends Controller
         $modelCustomer = $this->findModel($id);
         $modelsAddress = $modelCustomer->addresses;
 
-        if ($modelCustomer->load(Yii::$app->request->post())) {
-
-            $oldIDs = ArrayHelper::map($modelsAddress, 'id', 'id');
-            $modelsAddress = Model::createMultiple(Address::classname(), $modelsAddress);
-            Model::loadMultiple($modelsAddress, Yii::$app->request->post());
-            $deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsAddress, 'id', 'id')));
-
-            // ajax validation
-            if (Yii::$app->request->isAjax) {
-                Yii::$app->response->format = Response::FORMAT_JSON;
-                return ArrayHelper::merge(
-                    ActiveForm::validateMultiple($modelsAddress),
-                    ActiveForm::validate($modelCustomer)
-                );
-            }
-
-            // validate all models
-            $valid = $modelCustomer->validate();
-            $valid = Model::validateMultiple($modelsAddress) && $valid;
-
-            if ($valid) {
-                $transaction = \Yii::$app->db->beginTransaction();
-                try {
-                    if ($flag = $modelCustomer->save(false)) {
-                        if (! empty($deletedIDs)) {
-                            Address::deleteAll(['id' => $deletedIDs]);
-                        }
-                        foreach ($modelsAddress as $modelAddress) {
-                            $modelAddress->customer_id = $modelCustomer->id;
-                            if (! ($flag = $modelAddress->save(false))) {
-                                $transaction->rollBack();
-                                break;
-                            }
-                        }
-                    }
-                    if ($flag) {
-                        $transaction->commit();
-                        return $this->redirect(['view', 'id' => $modelCustomer->id]);
-                    }
-                } catch (Exception $e) {
-                    $transaction->rollBack();
-                }
-            }
-        }
-
-        return $this->render('update', [
-            'modelCustomer' => $modelCustomer,
-            'modelsAddress' => (empty($modelsAddress)) ? [new Address] : $modelsAddress
-        ]);
-    }
-}
-```
-
-#### 2alt. Alternatively Update Action when primary key of modelsAddress is not "id"
-```php
-<?php
-
-namespace app\controllers;
-
-use Yii2\Extensions\DynamicForm\Models\Model; //Very important. Do not mix this with yii\base\Model
-
-class CustomerController extends Controller
-{
-    public function actionUpdate($id)
-    {
-        $modelCustomer = $this->findModel($id);
-        $modelsAddress = $modelCustomer->addresses;
-
-        // indicate here the real primary key of your model modelCustomer
-        $pk = "pk_table_modelCustomer";
+        // primary key of $modelsAddress
+        $pkey = 'address_id';
 
         if ($modelCustomer->load(Yii::$app->request->post())) {
 
-            $oldIDs = ArrayHelper::map($modelsAddress, $pk, $pk);
-            $modelsAddress = Model::createMultiplePkNotId(Address::classname(), $modelsAddress, $pk);
+            $oldIDs = ArrayHelper::map($modelsAddress, $pkey, $pkey);
+            $modelsAddress = Model::createMultiple(Address::classname(), $modelsAddress, $pkey);
             Model::loadMultiple($modelsAddress, Yii::$app->request->post());
-            $deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsAddress, $pk, $pk)));
+            $deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsAddress, $pkey, $pkey)));
 
             // ajax validation
             if (Yii::$app->request->isAjax) {
@@ -250,7 +182,7 @@ class CustomerController extends Controller
                 try {
                     if ($flag = $modelCustomer->save(false)) {
                         if (! empty($deletedIDs)) {
-                            Address::deleteAll([$pk => $deletedIDs]);
+                            Address::deleteAll([$pkey => $deletedIDs]);
                         }
                         foreach ($modelsAddress as $modelAddress) {
                             $modelAddress->customer_id = $modelCustomer->id;