yii2: possibility to show all error messages in activeForm

this is not about errorSummary but about inputs in activeform.

@cebe @qiangxue @samdark

What do you think about creating an option to catch all errors that way?

helpers\BaseHtml.php

public static function errorSummary($models, $options = [])
{
    $header = isset($options['header']) ? $options['header'] : '<p>' . Yii::t('yii', 'Please fix the following errors:') . '</p>';
    $footer = ArrayHelper::remove($options, 'footer', '');
    $encode = ArrayHelper::remove($options, 'encode', true);
    unset($options['header']);

    $onlyFirst = isset($options['onlyFirst']) ? $options['onlyFirst'] : true;
    unset($options['onlyFirst']);

    $lines = [];
    if (!is_array($models)) {
        $models = [$models];
    }
    foreach ($models as $model) {
        /* @var $model Model */
        if ($onlyFirst === true) {
            foreach ($model->getFirstErrors() as $error) {
                $lines[] = $encode ? Html::encode($error) : $error;
            }
        } else {
            foreach ($model->getErrors() as $attribute => $errors) {
                foreach ($errors as $error) {
                    $lines[] = $encode ? Html::encode($error) : $error;
                }
            }
        }
    }

    if (empty($lines)) {
        // still render the placeholder for client-side validation use
        $content = '<ul></ul>';
        $options['style'] = isset($options['style']) ? rtrim($options['style'], ';') . '; display:none' : 'display:none';
    } else {
        $content = '<ul><li>' . implode("</li>\n<li>", $lines) . '</li></ul>';
    }
    return Html::tag('div', $header . $content . $footer, $options);
}

no idea, could be in 2.0.x if it is configurable and default behavior does not change.