How to organize the use of the alert widget with pjax?

Question

Yii

I'm trying to organize the output of a flash message Alert when using pjax in a widget.
here is the actual code Vidget.php

namespace frontend\widget\vidget;
    
    use yii\base\Widget;
    use Yii;
    class Videt extends Widget{
        public function init(){
            parent::init();
        }
        public function run(){
            $model= new Model();
           
            if (Yii::$app->request->post()) {
                if($model->save()){
                Yii::$app->session->setFlash([
                  'success',
                   'Спасибо операция окончена']
                );
                   $this->render('html',[
                        'model'=>$model
                 ]);
                }else{
                 Yii::$app->session->setFlash([
                  'error',
                   'Извините произошла ошибка']
                );
                  $this->render('html',[
                        'model'=>$model
                 ]);
               }
            }else{
            return $this->render('html',[
                'model'=>$model
                ]);
        }
    }

hereviews/html.php

use yii\widgets\Pjax;
    use yii\bootstrap\Alert;
    echo $this->render('_form',[
        'model'=>$model,
    ]);
    Pjax::begin(['id' => 'reloded']);
        echo Alert::widget();
        Pjax::end();
    $this->registerJs(
    '$("document").ready(function(){
        $("#button").on("pjax:end", function() {
             $.pjax.reload({container:"#reloded"}); 
        });
    });');
    ?>

_form.phpI don’t write because the form itself works and everything is saved, only after restarting pjax Alert does not work. How to organize it correctly do not tell me?

Answer 1

It seems to me that you do not need a widget here, use the standard save method - through the controller action, because widgets are mainly designed to display some parts of the frontend. Also, the code duplication is very large, you render the view 3 times, while you can do all this 1 time after the conditions. It also makes no sense to write something to the session since you are rendering via pjax, you just need to send a message to the view, and there it will be rendered as an alert and you will not need to use the Alert widget.
controller's action:

$message = $status = null;

if (Yii::$app->request->post()) {
    if ($model->save()) {
        $status = 'success';
        $message = 'Спасибо операция окончена';
    } else {
        $status = 'error';
        $message = 'Извините произошла ошибка';
    }
}

$this->render('html', [
        'model' => $model,
        'status' => $status,
        'message' => $message,
]);

view:

<?php if ($status !== null && $message !== null): ?>
    <div class="alert alert-<?=$status?>">
      <strong><?=$status?>!</strong> <?=$message?>
    </div>
<?php endif; ?>
.......
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