app/views/submissions/show/_meta.html.erb
<% if submission.meta.present? && submission.meta["public"].present? %>
<%= content_tag :div,
nil,
id: "meta",
data: { meta: submission.meta["public"] } %>
<% end %>
<% if policy(submission).update? && submission.meta.present? %>
<br/><br/>
<h4>Meta tags</h4><br/>
<ul>
<% submission.meta.each do |k,v| %>
<li><b><%= k %>: </b><%= v %></li>
<% end %>
</ul>
<% end %>