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How do you paginate results from FuelPHP ORM models?

How do you paginate results from FuelPHP ORM models?

To paginate results from FuelPHP ORM models, you can use both the paginate() method directly on the ORM model or the Pagination class for more flexibility. Let’s break down these two approaches with examples.

Using paginate() Method

The paginate() method is a quick way to limit results per page. Here’s an example that fetches 10 items per page for a specific page number:

Example

<?php
$items = Model_YourModel::query()
    ->rows(10) // Limit to 10 items per page
    ->page(1)  // Specify the current page number
    ->get();
?>

In this case:

  • rows(10) sets the number of results displayed per page.
  • page(1) fetches the results for page 1. To make this dynamic, you can replace 1 with a variable like Input::get('page') to fetch the page number from the URL or request.

Using the Pagination Class

If you need more control, such as generating pagination links or managing large datasets, the Pagination class is ideal. Here’s a more detailed example:

Step-by-Step

  1. Load the Pagination Class: You first instantiate the Pagination class and configure it.
  2. Set Configuration: The config includes total items (the count of all records), items per page, and the current page.
  3. Query the Model: Use the pagination configuration (offset and per_page) to fetch the correct slice of data from your model.
  4. Render the Pagination in Views: Pass the pagination and data to your view for rendering.

Example Code

Example

<?php
// Load the Pagination class with configuration
$pagination = Pagination::forge('mypagination', [
    'total_items'    => Model_YourModel::query()->count(), // Get the total number of items
    'per_page'       => 10, // Number of items per page
    'current_page'   => ['param' => 'page', 'value' => Input::get('page', 1)], // Set the current page
]);

// Fetch paginated results using pagination parameters
$items = Model_YourModel::query()
    ->rows($pagination->per_page)  // Set limit to per_page
    ->offset($pagination->offset)  // Fetch the correct offset
    ->get();

// Pass pagination and results to the view
$this->template->pagination = $pagination;
$this->template->items = $items;
?>

Key Concepts:

  • Pagination::forge(): Creates an instance of the Pagination class. You set configuration values like total_items, per_page, and current_page.
  • $pagination->per_page: Limits the number of items displayed on each page.
  • $pagination->offset: This helps in skipping the correct number of records, ensuring that the correct items are shown for the current page.
  • Input::get('page', 1): Retrieves the current page number from the URL or defaults to page 1 if not provided.

Example View for Displaying Pagination Links:

To render pagination links in your view:

Example

<?php
<ul class="pagination">
    <?php echo $pagination->render(); ?>
</ul>
?>

This will generate the pagination controls, such as “Next,” “Previous,” and individual page numbers, based on the current pagination settings.

Customizing Pagination Links

You can customize the appearance or behavior of pagination links by tweaking the settings or overriding the pagination template. You can find this in the views folder under pagination.php, and you can modify it as needed for better UI integration.

Real-World Example

Imagine you have an e-commerce website listing products, and you want to paginate them with 10 products per page:

Example

<?php
// Initialize Pagination for Products
$pagination = Pagination::forge('product_pagination', [
    'total_items'    => Model_Product::query()->count(),
    'per_page'       => 10,
    'current_page'   => ['param' => 'page', 'value' => Input::get('page', 1)],
]);

// Fetch paginated products
$products = Model_Product::query()
    ->rows($pagination->per_page)
    ->offset($pagination->offset)
    ->get();

// Send products and pagination to view
$this->template->pagination = $pagination;
$this->template->products = $products;
?>

In your view, display the products and render pagination links:

Example

<?php
<ul>
    <?php foreach ($products as $product): ?>
        <li><?php echo $product->name; ?></li>
    <?php endforeach; ?>
</ul>

<div class="pagination">
    <?php echo $pagination->render(); ?>
</div>
?>

This setup gives you full control over how many products are shown on each page and makes navigating between pages easier for users. 

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