Yii2 how to implementation Optimistic Locks - php

Question

Yii2 how to implementation Optimistic Locks.
I'm trying to follow this official doc.
I thought I carefully follow the step.
but still error :
Here my procedure.
Create a column in the DB "version defualt velue = '0'
2.Model.php
use yii\behaviors\OptimisticLockBehavior;
class OptimisticTest extends \yii\db\ActiveRecord
{
public static function tableName()
{
return 'optimistictest';
}
public function rules()
{
return [
[['version'], 'required'],
[['created_by', 'updated_by','version'], 'integer'],
];
}
public function behaviors()
{
return [
[
'class' => TimestampBehavior::className(),
'value' => new Expression('NOW()'),
],
[
'class' => BlameableBehavior::className(),
],
[
'class' => OptimisticLockBehavior::className(), //'getLockAttribute' =>$this->version
],
];
}
}
myController.php
public function actionUpdate($id)
{
$model = $this->findModel($id);
$tempDocs = $model->docs;
$modelRunning = $this->findModelRunning($model->running_id);
$model->scenario = 'update';
try {
if ($model->load(Yii::$app->request->post()) &&
$modelRunning->load(Yii::$app->request->post()) &&
Model::validateMultiple([$model,$modelRunning]))
{
if($modelRunning->save())
{
$this->CreateDir($model->ref);
$model->docs = $this->uploadMultipleFile($model,$tempDocs);
$model->save();
}
return $this->redirect(['view', 'id' => $model->id]);
} else {
return $this->render('update', [
'model' => $model,
'modelRunning' => $modelRunning,
]);
}
} catch (StaleObjectException $e) {
// logic to resolve the conflict
Yii::$app->session->setFlash('danger',Yii::t('app', 'Record can not be updated, there is a user associated with it'));
return $this->redirect(['index']);
}}
Error is From Model.php in public function behaviors()
in step 1. Override this method to return the name of this column.
how to override this method.
what i'm missing.

Answer 1

Overriding optimisticLock() method means, that you have to implement the method in your model so it can be used instead of default implementation.
Your model should look like this
class OptimisticTest extends \yii\db\ActiveRecord
{
//... your other methods in model
public function optimisticLock()
{
//this method should return the name of version attribute
return 'version';
}
}