Added: Include order by ID desc for tie breakers in pagination

lib/api/helpers.rb

@@ -393,7 +393,15 @@ module API
     # rubocop: disable CodeReuse/ActiveRecord
     def reorder_projects(projects)
-      projects.reorder(params[:order_by] => params[:sort])
+      projects.reorder(order_options_with_tie_breaker)
+    end
+    # rubocop: enable CodeReuse/ActiveRecord
+
+    # rubocop: disable CodeReuse/ActiveRecord
+    def order_options_with_tie_breaker
+      {params[:order_by] => params[:sort]}.tap do |order|
+        order['id'] ||= 'desc'
+      end
     end
     # rubocop: enable CodeReuse/ActiveRecord

lib/api/issues.rb

@@ -29,8 +29,7 @@ module API
         issues = IssuesFinder.new(current_user, args).execute
           .preload(:assignees, :labels, :notes, :timelogs, :project, :author, :closed_by)
-
-        issues.reorder(args[:order_by] => args[:sort])
+        issues.reorder(order_options_with_tie_breaker)
       end
       # rubocop: enable CodeReuse/ActiveRecord

lib/api/merge_requests.rb

@@ -38,7 +38,7 @@ module API
         args[:scope] = args[:scope].underscore if args[:scope]
         merge_requests = MergeRequestsFinder.new(current_user, args).execute
-                           .reorder(args[:order_by] => args[:sort])
+                           .reorder(order_options_with_tie_breaker)
         merge_requests = paginate(merge_requests)
                            .preload(:source_project, :target_project)

lib/api/notes.rb

@@ -39,7 +39,7 @@ module API
           # at the DB query level (which we cannot in that case), the current
           # page can have less elements than :per_page even if
           # there's more than one page.
-          raw_notes = noteable.notes.with_metadata.reorder(params[:order_by] => params[:sort])
+          raw_notes = noteable.notes.with_metadata.reorder(order_options_with_tie_breaker)
           notes =
             # paginate() only works with a relation. This could lead to a
             # mismatch between the pagination headers info and the actual notes

lib/api/users.rb

@@ -26,7 +26,7 @@ module API
         # rubocop: disable CodeReuse/ActiveRecord
         def reorder_users(users)
           if params[:order_by] && params[:sort]
-            users.reorder(params[:order_by] => params[:sort])
+            users.reorder(order_options_with_tie_breaker)
           else
             users
           end