Yii2 How to properly handle $_POST data inside beforeSave() method?

Question

Yii

Tell me, what is the correct way to accept $_POST data for such a case?

public function beforeSave($insert)
    {
        if (parent::beforeSave($insert)) {
 
            Authors2products::deleteAll('products_id = :products_id', [':products_id' => $this->id]);
            
            $post = Yii::$app->request->post();
            
            if(isset($post['Products']['authors'])) {
                foreach($post['Products']['authors'] as $authors_id) {
                    $authors2products = new Authors2products();
                    $authors2products->authors_id = $authors_id;
                    $authors2products->products_id = $this->id;
                    $authors2products->save(); 
                }
            }
            
            return true;
        }
        return false;
   }

Answer 1

In the controller, use $model->load()
If necessary, set a public variable in the model, such as public $authors;
Then in beforeSave use $this->authors