Newscoop\GimmeBundle\Controller\ArticlesListController::linkOrUnlinkResources PHP Method

    private function linkOrUnlinkResources($playlist, $request, $action = 'link')
    {
        $matched = false;
        $resources = $request->attributes->get('links', array());
        foreach ($resources as $key => $objectArray) {
            if (!is_array($objectArray)) {
                return true;
            }
            $object = $objectArray['object'];
            if ($object instanceof \Exception) {
                throw $object;
            }
            if ($object instanceof Article) {
                if ($action == 'link') {
                    $position = false;
                    if (count($notConvertedLinks = $this->getNotConvertedLinks($request)) > 0) {
                        foreach ($notConvertedLinks as $link) {
                            if (isset($link['resourceType']) && $link['resourceType'] == 'article-position') {
                                $position = $link['resource'];
                            }
                        }
                    }
                    $playlistService = $this->get('playlists');
                    $playlistService->addArticle($playlist, $object, $position);
                } elseif ($action == 'unlink') {
                    $playlistService = $this->get('playlists');
                    $playlistService->removePlaylistArticle($playlist, $object);
                }
                $matched = true;
                continue;
            }
        }
        if ($matched === false) {
            throw new InvalidParametersException('Any supported link object not found');
        }
    }