src/DataProvider/Paginator/OrderRequestPaginator.php line 15

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  1. <?php
  4. namespace App\DataProvider\Paginator;
  7. use ApiPlatform\Core\Bridge\Doctrine\Orm\AbstractPaginator;
  8. use ApiPlatform\Core\Bridge\Doctrine\Orm\QueryAwareInterface;
  9. use ApiPlatform\Core\DataProvider\PaginatorInterface;
  10. use App\DataTransformer\OrderRequestDataTransformer;
  11. use Doctrine\ORM\Query;
  12. use Doctrine\ORM\QueryBuilder;
  13. use Doctrine\ORM\Tools\Pagination\Paginator as DoctrineOrmPaginator;
  15. class OrderRequestPaginator extends AbstractPaginator implements PaginatorInterface, QueryAwareInterface
  16. {
  18. /**
  19. * @var OrderRequestDataTransformer
  20. */
  21. private $transformer;
  23. /**
  24. * @var array
  25. */
  26. private $cachedDenormalizedItems;
  27. /**
  28. * @var array
  29. */
  30. private $items;
  32. /**
  33. * @var int
  34. */
  35. private $totalItems;
  37. public function __construct(OrderRequestDataTransformer $transformer, QueryBuilder $queryBuilder)
  38. {
  39. $doctrineOrmPaginator = new DoctrineOrmPaginator($queryBuilder, true);
  41. parent::__construct($doctrineOrmPaginator);
  43. $this->transformer = $transformer;
  44. $this->items = $queryBuilder->getQuery()->getResult();
  45. $this->cachedDenormalizedItems = [];
  46. $this->transformer->setSingleEntity(false);
  47. }
  49. public function getIterator(): \Traversable
  50. {
  52. foreach ($this->items as $item) {
  53. $cacheKey = $item->getId();
  55. if (array_key_exists($cacheKey, $this->cachedDenormalizedItems)) {
  56. yield $this->cachedDenormalizedItems[$cacheKey];
  57. continue;
  58. }
  60. $object = $this->transformer->transform($item);
  61. $this->cachedDenormalizedItems[$cacheKey] = $object;
  63. yield $object;
  64. }
  65. }
  68. /**
  69. * {@inheritdoc}
  70. */
  71. public function getLastPage(): float
  72. {
  73. if (0 >= $this->maxResults) {
  74. return 1.;
  75. }
  77. return ceil($this->getTotalItems() / $this->maxResults) ?: 1.;
  78. }
  80. /**
  81. * {@inheritdoc}
  82. */
  83. public function getTotalItems(): float
  84. {
  85. return (float) ($this->totalItems ?? $this->totalItems = \count($this->paginator));
  86. }
  88. /**
  89. * {@inheritdoc}
  90. */
  91. public function getQuery(): Query
  92. {
  93. return $this->paginator->getQuery();
  94. }
  96. }