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<?php |
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namespace Halapi\Factory; |
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use Halapi\ObjectManager\ObjectManagerInterface; |
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use Halapi\Representation\PaginatedRepresentation; |
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use Pagerfanta\Adapter\AdapterInterface; |
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use Pagerfanta\Pagerfanta; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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use Halapi\UrlGenerator\UrlGeneratorInterface; |
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/** |
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* Class PaginationFactory. |
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* |
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* @author Romain Richard |
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*/ |
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class PaginationFactory |
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{ |
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/** |
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* @var ObjectManagerInterface |
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*/ |
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public $objectManager; |
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/** |
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* @var UrlGeneratorInterface |
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*/ |
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public $urlGenerator; |
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/** |
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* @var RequestStack |
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*/ |
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private $requestStack; |
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/** |
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* @var string |
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*/ |
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private $pagerStrategy; |
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/** |
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* PaginationFactory constructor. |
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* |
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* @param UrlGeneratorInterface $urlGenerator |
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* @param ObjectManagerInterface $objectManager |
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* @param RequestStack $requestStack |
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* @param string $pagerStrategy |
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*/ |
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public function __construct( |
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UrlGeneratorInterface $urlGenerator, |
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ObjectManagerInterface $objectManager, |
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RequestStack $requestStack, |
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$pagerStrategy = 'DoctrineORM' |
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) { |
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$this->urlGenerator = $urlGenerator; |
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$this->objectManager = $objectManager; |
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$this->requestStack = $requestStack; |
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$this->setPagerStrategy($pagerStrategy); |
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} |
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/** |
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* Get a paginated representation of a collection of entities. |
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* Your repository for the object $className must implement the 'findAllSorted' method |
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* @param string $className |
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* |
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* @return PaginatedRepresentation |
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*/ |
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public function getRepresentation($className) |
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{ |
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$shortName = (new \ReflectionClass($className))->getShortName(); |
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list($page, $limit, $sorting, $filterValues, $filerOperators) = array_values($this->addPaginationParams()); |
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$results = $this->objectManager->findAllSorted($className, $sorting, $filterValues, $filerOperators); |
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$pagerAdapter = $this->getPagerAdapter($results); |
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$pager = new Pagerfanta($pagerAdapter); |
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$pager->setMaxPerPage($limit); |
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$pager->setCurrentPage($page); |
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return new PaginatedRepresentation( |
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$page, |
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$limit, |
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[ |
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'self' => $this->getPaginatedRoute($shortName, $limit, $page, $sorting), |
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'first' => $this->getPaginatedRoute($shortName, $limit, 1, $sorting), |
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'next' => $this->getPaginatedRoute( |
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$shortName, |
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$limit, |
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$page < $pager->getNbPages() ? $page + 1 : $pager->getNbPages(), |
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$sorting |
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), |
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'last' => $this->getPaginatedRoute($shortName, $limit, $pager->getNbPages(), $sorting), |
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], |
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(array) $pager->getCurrentPageResults() |
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); |
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} |
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/** |
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* @param string $pagerStrategy |
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*/ |
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public function setPagerStrategy($pagerStrategy) |
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{ |
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if (!class_exists('Pagerfanta\Adapter\\'.$pagerStrategy.'Adapter')) { |
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throw new \InvalidArgumentException(sprintf( |
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'No adapter named %s found in %s namespace', |
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'Doctrine'.$pagerStrategy.'Adapter', |
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'Pagerfanta\Adapter' |
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)); |
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} |
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$this->pagerStrategy = $pagerStrategy; |
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} |
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/** |
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* @param array $results |
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* |
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* @return AdapterInterface |
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*/ |
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private function getPagerAdapter($results) |
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{ |
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$adapterClassName = 'Pagerfanta\Adapter\\'.$this->pagerStrategy.'Adapter'; |
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return new $adapterClassName(...$results); |
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} |
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/** |
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* Get the pagination parameters, filtered. |
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* |
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* @return array |
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*/ |
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private function addPaginationParams() |
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{ |
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$resolver = new OptionsResolver(); |
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$resolver->setDefaults(array( |
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'page' => '1', |
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'limit' => '20', |
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'sorting' => [], |
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'filtervalue' => [], |
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'filteroperator' => [], |
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)); |
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$resolver->setAllowedTypes('page', ['NULL', 'string']); |
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$resolver->setAllowedTypes('limit', ['NULL', 'string']); |
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$resolver->setAllowedTypes('sorting', ['NULL', 'array']); |
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$resolver->setAllowedTypes('filtervalue', ['NULL', 'array']); |
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$resolver->setAllowedTypes('filteroperator', ['NULL', 'array']); |
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$request = $this->requestStack->getMasterRequest(); |
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return $resolver->resolve(array_filter([ |
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'page' => $request->query->get('page'), |
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'limit' => $request->query->get('limit'), |
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'sorting' => $request->query->get('sorting'), |
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'filtervalue' => $request->query->get('filtervalue'), |
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'filteroperator' => $request->query->get('filteroperator'), |
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])); |
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} |
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/** |
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* Return the url of a resource based on the 'get_entity' route name convention. |
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* |
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* @param string $name |
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* @param $limit |
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* @param $page |
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* @param $sorting |
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* |
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* @return string |
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*/ |
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private function getPaginatedRoute($name, $limit, $page, $sorting) |
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{ |
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return $this->urlGenerator->generate( |
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'get_'.strtolower($name).'s', |
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[ |
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'sorting' => $sorting, |
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'page' => $page, |
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'limit' => $limit, |
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] |
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); |
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} |
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} |
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BigZ /
Halapi
