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How do you handle pagination and sorting of data in Slim Framework? - Code Stap
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How do you handle pagination and sorting of data in Slim Framework?

How do you handle pagination and sorting of data in Slim Framework?

To handle pagination and sorting of data in Slim Framework, follow these minimal steps:

1. Set Up Slim Framework

Make sure you have Slim Framework installed and set up.

Example

composer require slim/slim

2. Create Database Connection

Create a database connection using PDO or your preferred method.

Example

<?php
// Database connection example
$pdo = new PDO('mysql:host=localhost;dbname=your_db', 'username', 'password');
?>

3. Define Pagination and Sorting Parameters

In your route, define the parameters for pagination (page number and items per page) and sorting (sort field and direction).

Example

<?php
$app->get('/items', function ($request, $response) use ($pdo) {
    // Get query parameters
    $page = (int) $request->getQueryParam('page', 1);
    $limit = (int) $request->getQueryParam('limit', 10);
    $sortField = $request->getQueryParam('sort', 'id'); // Default sort field
    $sortDirection = $request->getQueryParam('direction', 'ASC'); // Default sort direction

    // Validate sort field and direction (optional)
    $validSortFields = ['id', 'name', 'created_at'];
    $sortDirection = strtoupper($sortDirection) === 'DESC' ? 'DESC' : 'ASC';
    if (!in_array($sortField, $validSortFields)) {
        $sortField = 'id'; // Fallback to default
    }
?>

4. Fetch Data with Pagination and Sorting

Use SQL queries to fetch the paginated and sorted data.

Example

<?php
    // Calculate offset
    $offset = ($page - 1) * $limit;

    // Query the database
    $stmt = $pdo->prepare("SELECT * FROM items ORDER BY $sortField $sortDirection LIMIT :limit OFFSET :offset");
    $stmt->bindParam(':limit', $limit, PDO::PARAM_INT);
    $stmt->bindParam(':offset', $offset, PDO::PARAM_INT);
    $stmt->execute();

    // Fetch results
    $items = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // Return results
    return $response->withJson([
        'current_page' => $page,
        'items' => $items,
        'per_page' => $limit,
    ]);
});
?>

5. Run the Application

Make sure to run your Slim application.

Example

<?php
$app->run();
?>

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