app/views/admin_incoming_message/_admin_columns.html.erb
<table class="table table-striped table-condensed">
<tbody>
<% incoming_message.for_admin_column do |name, value| %>
<tr>
<td>
<b><%= name.humanize %></b>
</td>
<td>
<% if name =~ /^cached_.*?$/ %>
<% truncated_value = truncate(h(value&.squish), length: 100, omission: '') { link_to '…', '#', title: 'Toggle hidden', class: 'toggle-hidden' } %>
<%= simple_format(truncated_value) %>
<div style="display:none;"><%= simple_format(value) %></div>
<% elsif name == 'prominence' %>
<%= h highlight_prominence(value) %>
<% else %>
<%= admin_value(value) %>
<% end %>
</td>
</tr>
<% end %>
</tbody>
</table>