fix(fworks): fix internal server error for activity log page

app/models/frameworks/activity_log_item.rb

@@ -1,4 +1,6 @@
 class Frameworks::ActivityLogItem < ApplicationRecord
+  include Presentable
+
   belongs_to :actor, polymorphic: true, optional: true
   belongs_to :subject, polymorphic: true, optional: true
   delegated_type :activity, types: %w[Frameworks::ActivityLoggableVersion Frameworks::ActivityEvent]

app/models/frameworks/activity_log_item/presentable.rb

@@ -0,0 +1,15 @@
+module Frameworks::ActivityLogItem::Presentable
+  extend ActiveSupport::Concern
+
+  def display_subject
+    "#{subject.try(:activity_log_display_type)} #{subject.try(:reference)}"
+  end
+
+  def display_created_at
+    created_at.strftime("%d %B %Y at %H:%M:%S")
+  end
+
+  def display_actor
+    actor.try(:full_name)
+  end
+end

app/models/frameworks/activity_loggable/activity_log_presentable.rb

@@ -12,4 +12,8 @@ def activity_log_display_name
   def activity_log_display_short_name
     try(:short_name) || try(:reference)
   end
+
+  def activity_log_display_type
+    self.class.to_s.demodulize.underscore.humanize
+  end
 end

app/views/frameworks/management/activity_logs/_list.html.erb

@@ -13,7 +13,7 @@
         <td class="govuk-table__cell"><code><%= activity_log_item.guid %></code></td>
         <td class="govuk-table__cell"><%= activity_log_item.display_created_at %></td>
         <td class="govuk-table__cell"><%= activity_log_item.display_actor %></td>
-        <td class="govuk-table__cell"><%= link_to activity_log_item.display_subject, activity_log_item.subject, class: "govuk-link" %> - <%= render activity_log_item %></td>
+        <td class="govuk-table__cell"><%= link_to activity_log_item.display_subject, activity_log_item.subject, class: "govuk-link" %> - <%= activity_log_item.event_description %></td>
       </tr>
     <% end %>
   </tbody>