Let’s say you’re using a validator that doesn’t correspond to a specific field and you want to display it on the form. For example, I’m using the compare validator and wish the error summary to appear on the create form.
[php]
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
/* @var $this yii\web\View */
/* @var $model frontend\models\Participant */
/* @var $form yii\widgets\ActiveForm */
?>
<div class="participant-form">
<?php $form = ActiveForm::begin(); ?>
<?= $form->errorSummary($model); ?>
<p>Email address:</p>
[/php]