public function getExpr()
    {
        $q = $this->owner->_dsql();

        return $q->bt($this->relation ? $this->relation->short_name : $q->main_table).'.'.
            $q->bt($this->actual_field ?: $this->short_name);
    }
public function getExpr()
    {
        $q = $this->owner->_dsql();

        return $q->bt($this->relation ? $this->relation->short_name : $q->main_table).'.'.
            $q->bt($this->actual_field ?: $this->short_name);
    }
public function getExpr ( ) { $ q = $ this -> owner -> _dsql ( ) ; return $ q -> bt ( $ this -> relation ? $ this -> relation -> short_name : $ q -> main_table ) . '.' . $ q -> bt ( $ this -> actual_field ? : $ this -> short_name ) ; }
Returns field of this model.

@return string
Returns field of this model .