How to check model is update , insert or delete in Yii2 - activerecord

Question

I have a model in Yii.
How I can identify Yii model is being update, insert or delete after I save it ($model->save() || $model->delete())?

Answer 1

With $model->isNewRecord you can check if the model will be saved or updated. With ($model->save() || $model->delete()) you cannot directly determine what has happend. If $model->save() was not successful, then because of validation errors. $model->delete() will be called. This will be 1 (i.e. true) if deletion was successfull.
I don't know why you have this statement, but if you cannot change it for some reason and want to know what is going on you could use the events:
$model->on(yii\db\BaseActiveRecord::EVENT_AFTER_INSERT, function(yii\db\AfterSaveEvent $e) {
// model was inserted
});
$model->on(yii\db\BaseActiveRecord::EVENT_AFTER_UPDATE, function(yii\db\AfterSaveEvent $e) {
// model was updated
});
$model->on(yii\db\BaseActiveRecord::EVENT_AFTER_DELETE, function(yii\base\Event $e) {
// model was deleted
});
If you can extend the model class you could overwrite the corresponding methods instead of attaching event handlers. Then you could create a intermediate class that deals with what you need to do, and let derive any model classes from that intermediate class:
class ExtendedActiveRecord extends yii\db\ActiveRecord {
public function afterSave($insert, $changedAttributes) {
// Do anything you want
if($insert)
// model was inserted
else
// model was deleted
parent::afterSave($insert, $changedAttributes);
}
public function afterDelete() {
// Do anything you want
parent::afterDelete();
}
}
class ModelA extends ExtendedActiveRecord {
....
}
class ModelB extends ExtendedActiveRecord {
....
}

Answer 2

If you want only log what is happening with your models, you may use one of audit trails extensions: bedezign/yii2-audit or sammaye/yii2-audittrail
If you want to write your own behavior you may be interested by $dirtyAttributes property which holds attributes that has been changed after save/fetch from database.

Answer 3

The easiest way is to check when saving. What I mean is that when you save your model, it will return a true/false value, and in the case of a false the model will contain an array or error messages.
That's the easiest way also here you can solve problems, send alerts, print debug info, or do something regarding an error.
$model = new MyTable();
$model->name = example;
if($model->save()){
//Nice its inserted/updated, go ahead
} else {
//Woops error here, not inserted
}
Go ahead, give it a try.
Read more here: https://www.yiiframework.com/doc/api/2.0/yii-db-baseactiverecord#save()-detail