'Varchar(255)', ); private static $many_many = array( 'Banners' => Banner::class, ); private static $owns = array( 'Banners', 'Custom' ); /** * All custom objects with the same number. E.g. 'Page 1' owns 'Custom 1' * * @return DataList */ public function Custom() { $title = str_replace('Page', 'Custom', $this->Title); return CustomRelation::get()->filter('Title', $title); } }