if(!empty($q['_join_country_with_person'])){
$tn = $this->tableName();
// $this->selectAdd();
-// $this->selectAdd(" i18n_translate('c' , Office.country, 'en') as office_id_country_name");
-// $this->_extra_col = array('office_country_name');
-// $this->_distinct= 'office_id_country&cols=office_id_country,office_id_country_name';
+ $this->selectAdd(" i18n_translate('c' , Office.country, 'en') as office_id_country_name");
+ $this->_extra_col = array('office_country_name');
+ $this->_distinct= 'office_id_country&cols=office_id_country,office_id_country_name';
//then the query should be _distinct=office_id_country&cols=office_id_country,office_id_country_name
$p = DB_DataObject::factory('Person');
$p->whereAdd("office_id > 0");