yii2 Ajax Request Submitting Ajax form

Example

View file:

<?php 
use yii;
use yii\bootstrap\ActiveForm;
use yii\helpers\Html;
?>

<?php 
$form = ActiveForm::begin([
    'action' => ['comments/ajax-comment'],
    'options' => [
        'class' => 'comment-form'
    ]
]); 
?>
    <?= $form->field($model, 'comment'); ?>

    <?= Html::submitButton("Submit", ['class' => "btn"]); ?>

<?php ActiveForm::end(); ?>

Javascript:

 jQuery(document).ready(function($) {
       $(".comment-form").submit(function(event) {
            event.preventDefault(); // stopping submitting
            var data = $(this).serializeArray();
            var url = $(this).attr('action');
            $.ajax({
                url: url,
                type: 'post',
                dataType: 'json',
                data: data
            })
            .done(function(response) {
                if (response.data.success == true) {
                    alert("Wow you commented");
                }
            })
            .fail(function() {
                console.log("error");
            });
        
        });
    });

Controller Action:

public function actionAjaxComment()
{
    $model = new Comments();
    if (Yii::$app->request->isAjax) {
        Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return [
                'data' => [
                    'success' => true,
                    'model' => $model,
                    'message' => 'Model has been saved.',
                ],
                'code' => 0,
            ];
        } else {
            return [
                'data' => [
                    'success' => false,
                    'model' => null,
                    'message' => 'An error occured.',
                ],
                'code' => 1, // Some semantic codes that you know them for yourself
            ];
        }
    }
}