/**
* @param Varien_Data_Collection $collection
* @throws Exception
*/
protected function _addPagingHeaderData(Varien_Data_Collection $collection)
{
$links = array();
$totalCount = $collection->getSize();
$pageSize = $collection->getPageSize();
$totalPageCount = ceil($totalCount / $pageSize);
$currentPage = $collection->getCurPage();
if ($currentPage === null) {
$currentPage = 1;
}
if ($currentPage > 1) {
$links[] = $this->_getPageLink(1, 'first');
$links[] = $this->_getPageLink($currentPage - 1, 'prev');
}
if ($currentPage < $totalPageCount) {
$links[] = $this->_getPageLink($currentPage + 1, 'next');
$links[] = $this->_getPageLink($totalPageCount, 'last');
}
$this->getResponse()->setHeader('Link', implode(", ", $links))->setHeader('X-Total-Count', $totalCount)->setHeader('X-Total-Pages', $totalPageCount)->setHeader('X-Current-Page', $currentPage);
}
