app/views/events/_event.html.erb
<tr>
<%- if administrator? || Event.editable_by(current_person).include?(event) -%>
<td><%= link_to event.date.to_s(:long), edit_admin_event_path(event) %></td>
<td><%= link_to event.name, edit_admin_event_path(event) %></td>
<% else -%>
<td><%= link_to event.date.to_s(:long), event_path(event) %></td>
<td><%= link_to event.name, event_path(event) %></td>
<% end -%>
</tr>