hexo-theme-volantis/layout/_partial/side.ejs

<aside class='l_side'>
  <% page.sidebar.forEach(function(widget_id){ %>
    <% theme.widget.forEach(function(widget){ %>
      <% if (widget.id == widget_id){ %>
        <%- partial('../_widget/' + widget.class, {item: widget}) %>
      <% } %>
    <% }) %>
  <% }) %>
</aside>