Create Timestamp

[AnasShafqat]

Timestamp is required for the following fileds

1. created_at
2. updated_at
3. created_by
4. updated_by

[Kinza59]

Timestamp fields are populating automatically:

in controller.php:

actionCreate() {
$model->created_by = Yii::$app->user->identity->id; 
                $model->created_at = new \yii\db\Expression('NOW()');
                $model->updated_by = '0';
                $model->updated_at = '0'; 
                $model->save();
}
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actionUpdate(){
$model->updated_by = Yii::$app->user->identity->id;
                $model->updated_at = new \yii\db\Expression('NOW()');
                $model->created_by = $model->created_by;
                $model->created_at = $model->created_at;
                $model->save();
}