Created
October 31, 2013 09:58
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JsonHandler for KnpPaginatiorBundle
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| <?php | |
| namespace Serializer\Handler; | |
| use FOS\RestBundle\View\ViewHandler; | |
| use FOS\RestBundle\View\View; | |
| use Knp\Bundle\PaginatorBundle\Pagination\SlidingPagination; | |
| use Symfony\Component\HttpFoundation\Request; | |
| use Symfony\Component\Routing\RouterInterface; | |
| /** | |
| * @author kibao | |
| */ | |
| class JsonHandler | |
| { | |
| protected $router; | |
| public function __construct(RouterInterface $router) | |
| { | |
| $this->router = $router; | |
| } | |
| public function createResponse(ViewHandler $handler, View $view, Request $request, $format) | |
| { | |
| $data = $view->getData(); | |
| if ($data instanceof SlidingPagination) { | |
| $view->setHeader('Link', $this->getPageLinksHeader($data)); | |
| $view->setData($data->getItems()); | |
| } | |
| return $handler->createResponse($view, $request, $format); | |
| } | |
| protected function getPageLinksHeader(SlidingPagination $pagination) | |
| { | |
| $pages = $this->getPages($pagination); | |
| $page_links = array(); | |
| foreach ($pages as $page => $path) { | |
| $page_links[$page] = sprintf('<%s>; rel="%s"', $path, $page); | |
| } | |
| return implode(', ', $page_links); | |
| } | |
| protected function getPages(SlidingPagination $pagination) | |
| { | |
| $current = $pagination->getCurrentPageNumber(); | |
| $pagination_data = $pagination->getPaginationData(); | |
| $first = isset($pagination_data['first']) ? $pagination_data['first'] : null; | |
| $previous = isset($pagination_data['previous']) ? $pagination_data['previous'] : null; | |
| $next = isset($pagination_data['next']) ? $pagination_data['next'] : null; | |
| $last = isset($pagination_data['last']) && $pagination_data['last'] != 0 ? $pagination_data['last'] : null; | |
| $pages = array(); | |
| if (null !== $first && $current != $first) { | |
| $pages["first"] = $this->generatePath($pagination, $first); | |
| } | |
| if (null !== $previous) { | |
| $pages["previous"] = $this->generatePath($pagination, $previous); | |
| } | |
| if (null !== $next) { | |
| $pages["next"] = $this->generatePath($pagination, $next); | |
| } | |
| if (null !== $last && $current != $last) { | |
| $pages["last"] = $this->generatePath($pagination, $last); | |
| } | |
| return $pages; | |
| } | |
| protected function generatePath(SlidingPagination $pagination, $page, $absolute = true) | |
| { | |
| $params = $pagination->getQuery( | |
| array( | |
| $pagination->getPaginatorOption('pageParameterName') => $page | |
| ) | |
| ); | |
| return $this->router->generate($pagination->getRoute(), $params, $absolute); | |
| } | |
| } |
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