src/views/sitemap.tpl
<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
{{{ if pages }}}
<sitemap>
<loc>{url}/sitemap/pages.xml</loc>
</sitemap>
{{{ end }}}
{{{ if categories }}}
<sitemap>
<loc>{url}/sitemap/categories.xml</loc>
</sitemap>
{{{ end }}}
{{{ each topics }}}
<sitemap>
<loc>{url}/sitemap/topics.{@value}.xml</loc>
</sitemap>
{{{ end }}}
</sitemapindex>