Reasons for double insertion of data in Yii2?

Question

Yii

I am inserting data:

public  function actionInsert($id,$barcode){
        if(Yii::$app->request->isAjax){
            if(Yii::$app->request->isGet){
                $id_barcode=Probirki::findOne(['barcode'=>$barcode])->id;
                Yii::$app->db->createCommand()->insert('worklist_probirki', [
                    'id_probirka' => $id_barcode,
                    'id_worklist' =>$id,
                ])->execute();

              return $this->redirect('/laboratory/worklist/spisok?id='.$id);
            }
        }

    }

There is a problem of data duplication. What is the reason?

Answer 1

Because this code is called twice

Answer 2

In the debug panel, see how many times this request is executed