Zend Paginator with Gdata Youtube - zend-framework

Question

How Zend_Paginator can work according to the exchange of the variable query?
In line 8 performs a single fetch and does not change even by changing the query variable.
How to do paging function in accordance with the start-index from gdata feed?
The code: http://pastebin.com/rmxSP1Us
$yt = new Zend_Gdata_YouTube();
$limit = 12;
$offset = ($page - 1) * $limit + 1;
$query = "http://gdata.youtube.com/feeds/api/users/aculinario/favorites?start-index=$offset";
$paginator = Zend_Paginator::factory($yt->getVideoFeed($query));
$paginator->setCurrentPageNumber($page);
$paginator->setItemCountPerPage($limit);
$paginator->setPageRange(6);
$this->view->paginator = $paginator;
echo $query // query changes but paginator no, every time Zend_Paginator factory should check the returned array of getVideoFeed, but not this checking
Sry, my poor english, i'm Trying

Answer 1

I got something similar working using a quick & dirty paginator adapter.
It's worth noting there's probably nicer, more generic ways to achieve this. But this will get you going if you're in a hurry.
<?php
class Lib_Paginator_Adapter_YoutubeUser implements Zend_Paginator_Adapter_Interface
{
protected $_username;
protected $_results;
public function __construct($username)
{
$this->_username = $username;
}
public function getItems($offset, $itemCountPerPage)
{
$url = sprintf(
'%s/%s/%s',
Zend_Gdata_YouTube::USER_URI,
$this->_username,
Zend_Gdata_YouTube::UPLOADS_URI_SUFFIX
);
try
{
$query = new Zend_Gdata_Query($url);
$query->setMaxResults($itemCountPerPage)
->setStartIndex($offset);
$youtube = new Zend_Gdata_YouTube();
$this->_results = $youtube->getUserUploads(null, $query);
return $this->_results;
}
catch (Exception $ex)
{
echo $ex->getMessage();
exit;
}
}
public function count()
{
try
{
$youtube = new Zend_Gdata_YouTube();
return $youtube->getUserUploads($this->_username)->getTotalResults()->getText();
}
catch (Exception $ex)
{
echo $ex->getMessage();
exit;
}
}
}
Then in your controller
$page = $this->getRequest()->getParam("page");
$limit = 10;
$username = 'aculinario';
$paginator = new Zend_Paginator(new Lib_Paginator_Adapter_YoutubeUser($username));
$paginator->setItemCountPerPage($limit);
$paginator->setPageRange(10);
$paginator->setCurrentPageNumber($page);
$this->view->youtubeFeed = $paginator;