Zend framework data mappers + paginator - zend-framework

Question

I mostly use zend_db_table with a paginator, the problem is that it will return zend_db_rows instead the domain objects from my datamapper.
Let's say :
class Content_Model_ArticleMapper {
/*
* #param Zend_Db_Select $select
* #return Zend_Paginator
*/
public function getPaginator($select = null){}
}
I can hack it by overriding _loadAndReturnRow method in a custom rowset
However this is pretty ugly as I don't have a Zend_Db_Row anymore when I query the table.
And loose the methods too like save which I don't want to replicate on the domain object.
:
class Content_Model_DbTable_Rowset_Articles extends Zend_Db_Table_Rowset {
protected function _loadAndReturnRow($position)
{
if (!isset($this->_data[$position])) {
require_once 'Zend/Db/Table/Rowset/Exception.php';
throw new Zend_Db_Table_Rowset_Exception("Data for provided position does not exist");
}
// do we already have a row object for this position?
if (empty($this->_rows[$position])) {
$this->_rows[$position] = new Content_Model_Article($this->_data[$position]);
}
// return the row object
return $this->_rows[$position];
}
}
So my question how do you do this nicely ? :) Do you write custom Paginator adapters?

Answer 1

You can set a rowClass in your DbTable like
DbTable
class Content_Model_DbTable_Article extends Zend_Db_Table_Abstract {
protected $_name = 'article';
public function init() {
$this->setRowClass('Content_Model_Article');
}
}
Domain Model
class Content_Model_Article extends Zend_Db_Table_Row {
//for example
public function getAuthorFullName() {
return $this->author_firstname . ' ' . $this->author_lastname;
}
}
Now rows in your rowset are instances of Content_Model_Article and you can use the Zend_Paginator_Adapter_Iterator.
Using Paginator
$articleTable = new Content_Model_DbTable_Article();
$articleRowset = $articleTable->fetchAll();
$paginator = new Zend_Paginator(Zend_Paginator_Adapter_Iterator($articleRowset));
//now you can loop through the paginator
foreach($paginator as $article) {
echo $article->getAuthorFullName();
}