src/Pagination/Paginator.php line 41

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  1. <?php
  2. /*
  3. * This file is part of the Symfony package.
  4. *
  5. * (c) Fabien Potencier <fabien@symfony.com>
  6. *
  7. * For the full copyright and license information, please view the LICENSE
  8. * file that was distributed with this source code.
  9. */
  11. namespace App\Pagination;
  13. use Doctrine\ORM\Tools\Pagination\CountWalker;
  14. use Doctrine\ORM\QueryBuilder as DoctrineQueryBuilder;
  15. use Doctrine\ORM\Tools\Pagination\Paginator as DoctrinePaginator;
  17. /**
  18. * @author Javier Eguiluz <javier.eguiluz@gmail.com>
  19. */
  20. class Paginator
  21. {
  22. /**
  23. * Use constants to define configuration options that rarely change instead
  24. * of specifying them under parameters section in config/services.yaml file.
  25. *
  26. * See https://symfony.com/doc/current/best_practices.html#use-constants-to-define-options-that-rarely-change
  27. */
  28. // public const PAGE_SIZE = 1;
  30. private $currentPage;
  31. private $results;
  32. private $numResults;
  33. private $pageSize;
  34. private $queryBuilder;
  36. public function __construct(DoctrineQueryBuilder $queryBuilder) {
  37. $this->queryBuilder = $queryBuilder;
  38. // $this->pageSize = $pageSize;
  39. }
  41. public function paginate(int $page = 1,$page_size): self
  42. {
  43. $this->pageSize = $page_size;
  45. $this->currentPage = max(1, $page);
  46. $firstResult = ($this->currentPage - 1) * $this->pageSize;
  48. $query = $this->queryBuilder
  49. ->setFirstResult($firstResult)
  50. ->setMaxResults($this->pageSize)
  51. ->getQuery();
  53. if (0 === \count($this->queryBuilder->getDQLPart('join'))) {
  54. $query->setHint(CountWalker::HINT_DISTINCT, false);
  55. }
  57. $paginator = new DoctrinePaginator($query, true);
  59. $useOutputWalkers = \count($this->queryBuilder->getDQLPart('having') ?: []) > 0;
  60. $paginator->setUseOutputWalkers($useOutputWalkers);
  62. $this->results = $paginator->getIterator();
  63. $this->numResults = $paginator->count();
  65. return $this;
  66. }
  68. public function getCurrentPage(): int
  69. {
  70. return $this->currentPage;
  71. }
  73. public function getLastPage(): int
  74. {
  75. return (int) ceil($this->numResults / $this->pageSize);
  76. }
  78. public function getPageSize(): int
  79. {
  80. return $this->pageSize;
  81. }
  83. public function setPageSize(?int $page_size): self
  84. {
  85. $this->page_size = $page_size;
  87. return $this;
  88. }
  91. public function hasPreviousPage(): bool
  92. {
  93. return $this->currentPage > 1;
  94. }
  96. public function getPreviousPage(): int
  97. {
  98. return max(1, $this->currentPage - 1);
  99. }
  101. public function hasNextPage(): bool
  102. {
  103. return $this->currentPage < $this->getLastPage();
  104. }
  106. public function getNextPage(): int
  107. {
  108. return min($this->getLastPage(), $this->currentPage + 1);
  109. }
  111. public function hasToPaginate(): bool
  112. {
  113. return $this->numResults > $this->pageSize;
  114. }
  116. public function getNumResults(): int
  117. {
  118. return $this->numResults;
  119. }
  121. public function getResults(): \Traversable
  122. {
  123. return $this->results;
  124. }
  125. }