Override returned values from Model - php

Question

Is it possible to override values from Model->fetchAll() so it work globally. I have tried to override this in model, but does not work:
class Application_Model_DbTable_OdbcPush extends Zend_Db_Table_Abstract
{
public function __get(string $col)
{
$res = parent::__get($col);
if ($col == "lastrun") {
$res = ($res == "1912-12-12 00:00:00+07" ? NULL : $res);
}
return $res;
}
//...
}
In a controller:
$odbcModel = new Application_Model_DbTable_OdbcPush();
$rs = $odbcModel->fetchAll( $select );
I want to override value returned from fetchAll(), find() etc when col name is "lastrun";

Answer 1

The way you're going about this isn't going to work. __get is used to get data from protected or private properties and typically used in conjunction with getters.
For example, if you implemented __get() in your Application_Model_DbTable_OdbcPush class you could do something like:
$model = new Application_Model_DbTable_OdbcPush();
//echo out the _primary property (primary key of the table)
echo $model->primary;
and expect it to work. Because _primary exists as a property in Zend_Db_Table_Abstract.
To do what you want to do you'll need to do it after the result set has been returned (unless you want to rewrite the whole Zend Db component). Just run the result set through a foreach and change the value of lastrun to whatever you want.
I tried to find a place to override the Zend Db components to do what you want, but it would involve to many classes.
Remember that when using DbTable classes, they only interact with one table. You'll need to duplicate code for every table you want to effect or you'll need to extend a base class of some kind.
You always have the option to use straight Sql to frame whatever query you can come up with.
Good Luck!

Answer 2

Found the answer, for community i share here :D
http://framework.zend.com/manual/1.12/en/zend.db.table.row.html
So we have to overload Zend_Db_Table_Row and assign it to model/dbtable:
class Application_Model_DbTable_Row_OdbcPush extends Zend_Db_Table_Row_Abstract
{
// do some override here
}
class Application_Model_DbTable_OdbcPush extends Zend_Db_Table_Abstract
{
protected $_name = 'odbcpush';
protected $_primary = 'id';
private $_global = null;
protected $_rowClass = "Application_Model_DbTable_Row_OdbcPush";
// etc
}