Automatically accept incoming changes which only differ in case

Author: alistair-white-horne-tng

app/models/concerns/pending_changes_concern.rb

@@ -9,14 +9,24 @@ def stage_changes(attributes)
     new_pending_changes =
       attributes.each_with_object({}) do |(attr, new_value), staged_changes|
         current_value = public_send(attr)
-        staged_changes[attr.to_s] = new_value if new_value != current_value
+
+        if normalise_for_comparison(new_value) ==
+             normalise_for_comparison(current_value)
+          public_send("#{attr}=", new_value) if new_value != current_value
+        else
+          staged_changes[attr.to_s] = new_value
+        end
       end
 
     if new_pending_changes.any?
       update!(pending_changes: pending_changes.merge(new_pending_changes))
     end
   end
 
+  def normalise_for_comparison(value)
+    value.respond_to?(:downcase) ? value.downcase : value
+  end
+
   def with_pending_changes
     return self if pending_changes.blank?