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<?php
namespace JsonApi\Routes\StudyAreas;
use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use JsonApi\JsonApiController;
/**
* Zeigt einen bestimmten Studienbereich an.
*/
class StudyAreasIndex extends JsonApiController
{
protected $allowedIncludePaths = [
'children',
'courses',
'institute',
'parent',
];
protected $allowedPagingParameters = ['offset', 'limit'];
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
public function __invoke(Request $request, Response $response, $args)
{
$root = \StudipStudyArea::getRootArea();
$studyAreas = $this->mapTree($root);
list($offset, $limit) = $this->getOffsetAndLimit();
return $this->getPaginatedContentResponse(
array_slice($studyAreas, $offset, $limit),
count($studyAreas)
);
}
private function mapTree(\StudipStudyArea $node)
{
$level = [];
$child_nodes = $node->getChildNodes();
foreach ($child_nodes as $child_node) {
$level[] = $child_node;
$level = array_merge($level, $this->mapTree($child_node));
}
return $level;
}
}
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