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<?php |
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/** |
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* Class for data pagination |
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* |
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* @file DbPaginator.php |
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* |
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* PHP version 8.0+ |
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* |
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* @author Alexander Yancharuk <alex at itvault dot info> |
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* @copyright © 2012-2021 Alexander Yancharuk |
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* @date Втр Авг 07 23:04:47 2012 |
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* @license The BSD 3-Clause License |
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* <https://tldrlegal.com/license/bsd-3-clause-license-(revised)> |
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*/ |
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namespace Veles\DataBase; |
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use stdClass; |
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use Veles\Tools\SnippetBuilder; |
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/** |
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* Class DbPaginator |
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* |
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* Additional data for rendering can be stored as public params. |
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* For this purpose class extends stdClass. |
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* |
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* @author Alexander Yancharuk <alex at itvault dot info> |
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*/ |
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class DbPaginator extends stdClass |
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{ |
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public $offset = 1; |
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public $limit = 5; |
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public $page_nums; |
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public $curr_page; |
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public $template; |
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public $first_link; |
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public $last_link; |
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public $index; |
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/** |
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* Constructor |
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* @param string $template Path to template |
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* @param int $curr_page Current page |
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*/ |
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public function __construct($template, $curr_page = 1) |
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{ |
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$this->template = $template; |
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$this->curr_page = (int) $curr_page; |
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} |
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/** |
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* Pagination rendering |
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*/ |
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public function __toString() |
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{ |
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$this->first_link = false; |
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$this->last_link = false; |
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$this->index = 1; |
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if ($this->curr_page > 4) { |
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$this->first_link = 1; |
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$this->index = $this->curr_page - 3; |
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} |
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if ($this->page_nums > $this->curr_page + 3) { |
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$this->last_link = $this->page_nums; |
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$this->page_nums = $this->curr_page + 3; |
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} |
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$builder = new SnippetBuilder($this); |
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return $builder->build($this->template); |
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} |
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/** |
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* Getting offset |
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* @return int |
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*/ |
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public function getOffset() |
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{ |
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return ($this->curr_page - 1) * $this->getLimit(); |
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} |
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/** |
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* Getting limit |
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* @return int |
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*/ |
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public function getLimit() |
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{ |
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return $this->limit; |
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} |
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/** |
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* Elements per page setting |
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* @param mixed $limit Кол-во выводимых элементов на странице |
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*/ |
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public function setLimit($limit) |
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{ |
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if (!is_numeric($limit)) { |
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return; |
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} |
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$this->limit = (int) $limit; |
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} |
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/** |
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* Getting limit for sql-request |
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* @return string |
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*/ |
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public function getSqlLimit() |
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{ |
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$offset = $this->getOffset(); |
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$limit = $this->getLimit(); |
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return " LIMIT $offset, $limit"; |
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} |
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/** |
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* Pages quantity |
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* |
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* @throws \Exception |
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*/ |
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public function getMaxPages() |
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{ |
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1 |
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if (null !== $this->page_nums) { |
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return $this->page_nums; |
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} |
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1 |
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$this->calcMaxPages(); |
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return $this->page_nums; |
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} |
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/** |
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* Pages quantity calculation |
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* |
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* @throws \Exception |
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*/ |
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5 |
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public function calcMaxPages() |
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{ |
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$this->page_nums = (int) ceil(Db::getFoundRows() / $this->getLimit()); |
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} |
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/** |
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* Getting current page |
|
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*/ |
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1 |
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public function getCurrPage() |
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{ |
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1 |
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return $this->curr_page; |
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} |
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} |
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nafigator /
Veles
