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<?php |
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namespace Alpixel\Bundle\ElasticaQuerySorterBundle\Services; |
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use Elastica\Query; |
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use Elastica\Query\AbstractQuery; |
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use FOS\ElasticaBundle\Repository; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\HttpFoundation\Session\Session; |
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/** |
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* Class used in order to sort and paginate an Abstract Query |
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* obtained from an elastic search repository |
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* Data is stored in session to remember user choice |
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*/ |
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class ElasticaQuerySorter |
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{ |
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protected $session; |
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protected $request; |
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protected $sessionData; |
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const MAX_PER_PAGE = 25; |
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const NO_LIMIT = 99999; |
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public function __construct(RequestStack $requestStack, Session $session) |
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{ |
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$this->session = $session; |
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$this->request = $requestStack->getCurrentRequest(); |
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if (isset($this->request) && isset($this->request->query)) { |
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if ($this->request->query->has('clear_sort')) { |
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$this->session->remove('elastica_query_sorter'); |
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} |
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} |
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//Initializing the data in session |
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if (!$this->session->has('elastica_query_sorter')) { |
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$this->sessionData = []; |
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} else { |
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$this->sessionData = $this->session->get('elastica_query_sorter'); |
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} |
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} |
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public function sort(Repository $repository, Query $query, $nbPerPage = null) |
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{ |
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if ($nbPerPage === null) { |
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$nbPerPage = self::MAX_PER_PAGE; |
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} |
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//Creating the main elastica query |
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$query->setFields(['_id']); |
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//Analysing the request and the session data to add sorting |
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$this->addSort($query); |
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//Creating the paginator with the given repository |
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$paginator = $repository->findPaginated($query); |
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//If this a new sortBy, then we reset the currentPage to 1 |
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$paginator->setCurrentPage($this->getCurrentPage()); |
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$paginator->setMaxPerPage($nbPerPage); |
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return $paginator; |
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} |
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protected function getCurrentPage() |
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{ |
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$page = 1; |
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if (!empty($this->request) && $this->request->getRealMethod() === 'GET') { |
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$page = $this->getPage(); |
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} |
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return $page; |
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} |
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protected function getPage() |
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{ |
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$nbPage = null; |
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if ($this->request->query->has('page')) { |
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$nbPage = $this->request->query->get('page'); |
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} |
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if (empty($nbPage) || !is_numeric($nbPage)) { |
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return 1; |
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} |
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return $nbPage; |
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} |
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protected function addSort(Query &$query) |
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{ |
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$sortBy = explode('-', $this->fetchData('sortBy')); |
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$sortOrder = $this->fetchData('sortOrder'); |
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$sort = array(); |
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foreach ($sortBy as $element) { |
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if (empty($element) === false && empty($sortOrder) === false) { |
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$sort[$element] = array( |
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'order' => strtolower($sortOrder), |
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'missing' => '_last' |
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); |
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} |
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} |
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if (!empty($sort)) { |
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$query->setSort($sort); |
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} |
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return $query; |
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} |
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public function fetchData($key) |
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{ |
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$pageKey = (!empty($this->request)) ? $this->request->getPathInfo() : null; |
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$query = (!empty($this->request)) ? $this->request->query : null; |
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if ($query === null) { |
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return; |
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} |
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//Analyzing the session object to see if there is data in it |
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//If data is given from Request, it will be override the session data |
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if (array_key_exists($pageKey, $this->sessionData) && !$query->has($key)) { |
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if (isset($this->sessionData[$pageKey][$key])) { |
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return $this->sessionData[$pageKey][$key]; |
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} |
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} |
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if ($query->has('sortBy')) { |
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$value = $query->get($key); |
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$this->sessionData[$pageKey][$key] = $value; |
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$this->storeSessionData(); |
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return $value; |
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} |
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return null; |
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} |
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public function storeSessionData() |
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{ |
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$this->session->set('elastica_query_sorter', $this->sessionData); |
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} |
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/** |
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* Gets the value of session. |
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* |
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* @return mixed |
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*/ |
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public function getSession() |
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{ |
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return $this->session; |
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} |
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/** |
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* Gets the value of request. |
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* |
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* @return mixed |
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*/ |
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public function getRequest() |
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{ |
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return $this->request; |
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} |
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/** |
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* Gets the value of sessionData. |
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* |
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* @return mixed |
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*/ |
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public function getSessionData() |
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{ |
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return $this->sessionData; |
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} |
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} |
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alpixel /
AlpixelElasticaQuerySorterBundle
