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6863c7c557
- PaginationHelper.php: parseParams() + paginate() - DRY backend pagination logika - Pagination.jsx: frontend strankovaci komponenta (prev/next/cisla/info) - CSS: .admin-pagination styly v admin.css - Refaktor handleru: offers, orders, invoices, projects pouzivaji PaginationHelper - Default 25 zaznamu na stranku (misto 500), max 500 - Frontend: page state + reset na search/filter zmenu - useListData: pagination data v response Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
83 lines
2.4 KiB
PHP
83 lines
2.4 KiB
PHP
<?php
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/**
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* Pagination helper - extrakce spolecne logiky pro strankovani seznamu.
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*/
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declare(strict_types=1);
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class PaginationHelper
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{
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private const DEFAULT_PER_PAGE = 25;
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private const MAX_PER_PAGE = 500;
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/**
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* Nacte pagination parametry z GET requestu.
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*
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* @return array{page: int, per_page: int, sort: string, order: string, search: string}
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*/
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public static function parseParams(array $sortMap, string $defaultSort = 'created_at'): array
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{
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$sort = $_GET['sort'] ?? $defaultSort;
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$order = strtoupper($_GET['order'] ?? 'DESC') === 'ASC' ? 'ASC' : 'DESC';
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$page = max(1, (int) ($_GET['page'] ?? 1));
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$perPage = min(self::MAX_PER_PAGE, max(1, (int) ($_GET['per_page'] ?? self::DEFAULT_PER_PAGE)));
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$search = trim($_GET['search'] ?? '');
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if (!isset($sortMap[$sort])) {
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errorResponse('Neplatný parametr řazení', 400);
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}
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return [
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'page' => $page,
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'per_page' => $perPage,
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'sort' => $sortMap[$sort],
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'order' => $order,
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'search' => $search ? mb_substr($search, 0, 100) : '',
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];
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}
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/**
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* Spusti COUNT + SELECT dotazy s pagination a vrati vysledek.
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*
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* @param PDO $pdo
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* @param string $countSql - COUNT(*) dotaz
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* @param string $dataSql - SELECT dotaz (bez LIMIT/OFFSET)
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* @param array $params - parametry pro prepared statement
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* @param array{page: int, per_page: int, sort: string, order: string} $pagination
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* @return array{items: array, pagination: array}
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*/
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public static function paginate(
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PDO $pdo,
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string $countSql,
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string $dataSql,
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array $params,
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array $pagination
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): array {
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$page = $pagination['page'];
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$perPage = $pagination['per_page'];
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$stmt = $pdo->prepare($countSql);
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$stmt->execute($params);
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$total = (int) $stmt->fetchColumn();
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$offset = ($page - 1) * $perPage;
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$totalPages = (int) ceil($total / $perPage);
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$sql = "{$dataSql} LIMIT {$perPage} OFFSET {$offset}";
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$stmt = $pdo->prepare($sql);
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$stmt->execute($params);
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$items = $stmt->fetchAll();
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return [
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'items' => $items,
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'pagination' => [
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'total' => $total,
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'page' => $page,
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'per_page' => $perPage,
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'total_pages' => $totalPages,
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],
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];
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}
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}
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