/**
* Inject a "self" link
*
* @param LinkCollectionAwareInterface $resource
*/
protected function injectSelfLink(LinkCollectionAwareInterface $resource)
{
if ($this->renderLinks) {
if (!$resource->getLinks()->has('self')) {
$self = new Link('self');
$resourceIdentifier = $resource instanceof BackendResource ? $resource->getIdentifier() : $this->getIdentifier();
$params = $this->getRouteMatch()->getParams();
$params['resource'] = $resourceIdentifier;
if ($resource instanceof BackendResource) {
$params['id'] = $resource->getId();
}
$self->setRoute($this->getRouteMatch()->getMatchedRouteName());
$self->setRouteParams($params);
$this->renderUrlForLink($self);
$resource->getLinks()->add($self);
}
}
}
/**
* Generates Links and add them to a Link Collection for pagination
* using Link Relation Specification and a provided Resource Event
*
* @see http://www.iana.org/assignments/link-relations/link-relations.xhtml
* @param ResourceEvent $e
*/
public function composeLinksFromResourceEvent(ResourceEvent $e)
{
$params = $e->getParams() instanceof \ArrayObject ? $e->getParams()->getArrayCopy() : $e->getParams();
$params = ArrayUtils::merge($e->getRouteMatch()->getParams(), $params);
$params = ArrayUtils::merge(array('resource' => $e->getResourceIdentifier()), $params);
$route = $e->getRouteMatch()->getMatchedRouteName();
// Calculate last page
$lastPage = round($this->getTotalItems() / $this->getPageSize());
if ($lastPage <= 1) {
$lastPage = false;
}
$page = $this->getPage() + 1;
$nextPage = $page < $lastPage ? $page + 1 : false;
$prevPage = $page > 1 ? $page - 1 : false;
if ($page > 1) {
$first = new Link('first');
$first->setRoute($route);
$first->setRouteParams($params);
$this->getLinks()->add($first);
}
if ($nextPage) {
$next = new Link('next');
$next->setRoute($route);
$next->setRouteParams($params);
$next->setRouteOptions(array('query' => array('page' => $nextPage)));
$this->getLinks()->add($next);
}
if ($prevPage) {
$prev = new Link('prev');
$prev->setRoute($route);
$prev->setRouteParams($params);
$prev->setRouteOptions(array('query' => array('page' => $prevPage)));
$this->getLinks()->add($prev);
}
if ($lastPage) {
$last = new Link('last');
$last->setRoute($route);
$last->setRouteParams($params);
$last->setRouteOptions(array('query' => array('page' => $lastPage)));
$this->getLinks()->add($last);
}
}
