Allow duck-type access to member

ee/app/models/approver.rb

@@ -9,4 +9,8 @@ class Approver < ActiveRecord::Base
   def find_by_user_id(user_id)
     find_by(user_id: user_id)
   end
+
+  def member
+    user
+  end
 end

ee/app/models/approver_group.rb

@@ -13,4 +13,8 @@ class ApproverGroup < ActiveRecord::Base
 
     approver_groups.joins(:group).merge(public_or_visible_groups)
   end
+
+  def member
+    group
+  end
 end