<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace App\Pagination;
use Doctrine\ORM\Tools\Pagination\CountWalker;
use Doctrine\ORM\QueryBuilder as DoctrineQueryBuilder;
use Doctrine\ORM\Tools\Pagination\Paginator as DoctrinePaginator;
/**
* @author Javier Eguiluz <javier.eguiluz@gmail.com>
*/
class Paginator
{
/**
* Use constants to define configuration options that rarely change instead
* of specifying them under parameters section in config/services.yaml file.
*
* See https://symfony.com/doc/current/best_practices.html#use-constants-to-define-options-that-rarely-change
*/
// public const PAGE_SIZE = 1;
private $currentPage;
private $results;
private $numResults;
private $pageSize;
private $queryBuilder;
public function __construct(DoctrineQueryBuilder $queryBuilder) {
$this->queryBuilder = $queryBuilder;
// $this->pageSize = $pageSize;
}
public function paginate(int $page = 1,$page_size): self
{
$this->pageSize = $page_size;
$this->currentPage = max(1, $page);
$firstResult = ($this->currentPage - 1) * $this->pageSize;
$query = $this->queryBuilder
->setFirstResult($firstResult)
->setMaxResults($this->pageSize)
->getQuery();
if (0 === \count($this->queryBuilder->getDQLPart('join'))) {
$query->setHint(CountWalker::HINT_DISTINCT, false);
}
$paginator = new DoctrinePaginator($query, true);
$useOutputWalkers = \count($this->queryBuilder->getDQLPart('having') ?: []) > 0;
$paginator->setUseOutputWalkers($useOutputWalkers);
$this->results = $paginator->getIterator();
$this->numResults = $paginator->count();
return $this;
}
public function getCurrentPage(): int
{
return $this->currentPage;
}
public function getLastPage(): int
{
return (int) ceil($this->numResults / $this->pageSize);
}
public function getPageSize(): int
{
return $this->pageSize;
}
public function setPageSize(?int $page_size): self
{
$this->page_size = $page_size;
return $this;
}
public function hasPreviousPage(): bool
{
return $this->currentPage > 1;
}
public function getPreviousPage(): int
{
return max(1, $this->currentPage - 1);
}
public function hasNextPage(): bool
{
return $this->currentPage < $this->getLastPage();
}
public function getNextPage(): int
{
return min($this->getLastPage(), $this->currentPage + 1);
}
public function hasToPaginate(): bool
{
return $this->numResults > $this->pageSize;
}
public function getNumResults(): int
{
return $this->numResults;
}
public function getResults(): \Traversable
{
return $this->results;
}
}