FRONTEND_MVC/views/site/index/_inquirer_item.php

<?php
/**
 * @var $model \app\models\News
 * @var $key
 * @var $index
 * @var $widget
 */
use yii\web\View;
	$do = $model->getPart(); //уже голосовал если сделать обход кэша можно попробовать использовать
?>
<div class="col-md-4">
    <div class="inquirer-item">
		<div class="meta">
		<div class="rubric">
            <a href="/inquirer">Опрос</a>
		</div>
            <div class="title">
				<a href="/inquirer/<?=$model->id?>">
					<?=$model->text?>
				</a>
            </div>
            </div>
			<div class="answer p-3" key="<?=$model->id?>">
<?
$answers = $model->getAnswers();
if( $model->show == 'N'  ){
		echo $this->render('_ask_item', ['answers'=>$answers]);
}else{

		foreach($answers as $item){
?>
<div class="form-check-main">
  <input class="form-check-input" type="radio" id="Radio<?=$item->id?>" name="ask_<?=$model->id?>"  value="<?=$item->id?>">
  <label class="form-check-label" for="Radio<?=$item->id?>">
    <?=$item->text?>
  </label>
</div>
<?
		}
?>
<button class="btn btn-primary  mt-4" onclick="sendask(<?=$model->id?>)">Голосовать</button>
<?
	$bghtml = str_replace(["\r", "\n", "'"], "", $this->render('_ask_item', ['answers'=>$answers]));
?>
<script>
	window.bghtml || (window.bghtml = []);
	window.bghtml[<?=$model->id?>] = '<?=$bghtml?>';
</script>
<?
$filterurl = \yii\helpers\Url::base('https')."/inquirer/ajax";
$this->registerJs(
<<<JS
    function sendask(idq){
		ask = $('input:checked[name=ask_'+idq+']').val()
		$.post( "$filterurl", { 'idq': idq, 'ask': ask }, function( data ) {
			if( data.status == 'ok' ){
				//document.location.reload();
				console.log(data.status);
				$(".answer[key='"+idq+"']").html(window.bghtml[idq]);
			}
		});
    }
JS
    ,
    View::POS_END, 'sendask'
);
}
?>
			</div>
    </div>
</div>