/**
* sets up the null select for dropdown elements
*/
protected function _set_null_select()
{
$field = Participants_Db::get_column($this->name);
$default = '';
if ($field) {
$default = $field->default;
}
/*
* this is to add a blank mull select option if there is no default, no defined
* null select and no set field value
*/
if (self::is_empty($default) && !isset($this->options['null_select']) && self::is_empty($this->value)) {
$this->options['null_select'] = '';
}
parent::_set_null_select();
}
