<%= alert.update_type.upcase %>: <% case alert.update_type.to_sym when :cleared %><%= alert.cleared_at.to_s_relative %><% when :acknowledged %><%= alert.acknowledged_at.to_s_relative %> by <%= alert.acknowledged_by %><% else %><%= alert.raised_at.to_s_relative %><% end %>: <%= alert.subject %>: <%= alert.summary %><% if alert.source != alert.subject %> -- from <%= alert.source %><% end %>.