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<?php defined('SYSPATH') or die('No direct script access.');

class ORM extends ORM_Core {

  protected $has_many_polymorphic = array();

  public function __get($column) {
    if (isset($this->has_many_polymorphic[$column])) {
      // one<>many polymorphic relationship
      return $this->related[$column] = ORM::factory(inflector::singular($column))
       ->where($this->polymorphic_field_id($column), $this->object[$this->primary_key])
       ->where($this->polymorphic_field_object($column), inflector::singular($this->table_name))
       ->find_all();
    }
    return parent::__get($column);
  }

  protected function polymorphic_field_id($column) {
    return $this->has_many_polymorphic[$column] .'_id';
  }

  protected function polymorphic_field_object($column) {
    return $this->has_many_polymorphic[$column] .'_type';
  }
}