- @next_by_user = Changeset.where("user_id = ? AND id > ?", @changeset.user_id, @changeset.id).order("id ASC").first
- @prev_by_user = Changeset.where("user_id = ? AND id < ?", @changeset.user_id, @changeset.id).order("id DESC").first
+ @next_by_user = @changeset.user.changesets.where("id > ?", @changeset.id).reorder(:id => :asc).first
+ @prev_by_user = @changeset.user.changesets.where("id < ?", @changeset.id).reorder(:id => :desc).first