Arc-hive-omeka-theme/view/common/block-layout/list-of-sites.phtml

<?php
$archiveSiteHelper = $this->getHelperPluginManager()->get('archiveSiteMeta');
?>


<?php
$data = [];
foreach($sites as $site){
  $site_meta_values = $archiveSiteHelper->getSiteMetaValues($site);
  $site_meta_values['url'] = $site->siteUrl();
  $site_meta_values['title'] = $site->title();
  $site_meta_values['summay'] = nl2br($this->escapeHtml($site->summary()));
  array_push($data, $site_meta_values);
}
?>


<div data-vue-component="archive-list"
     data-collections='<?= json_encode($data, JSON_UNESCAPED_SLASHES) ?>'>
</div>


<script src="/themes/archive/asset/js/archive-list.js"></script>>