def redraw
    current_user.pref[:campaigns_per_page] = per_page_param if per_page_param
    current_user.pref[:campaigns_sort_by]  = Campaign.sort_by_map[params[:sort_by]] if params[:sort_by]
    @campaigns = get_campaigns(page: 1, per_page: per_page_param)
    set_options # Refresh options