What is the potential issue with PHP code that deletes a category from a list but still displays it until the page is refreshed?

The potential issue with PHP code that deletes a category from a list but still displays it until the page is refreshed is that the deletion is not reflected in real-time on the page. To solve this issue, you can implement a mechanism to remove the deleted category from the list without requiring a page refresh. This can be achieved by using AJAX to send a request to the server to delete the category and then dynamically update the list on the client-side. 

<?php
// Code to delete a category
if(isset($_POST['delete_category_id'])){
    $category_id = $_POST['delete_category_id'];
    
    // Code to delete the category from the database

    // Return a success message
    echo json_encode(['success' => true]);
    exit;
}
?>
<!DOCTYPE html>
<html>
<head>
    <title>Delete Category</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
    <ul id="category_list">
        <li>Category 1 <button class="delete_category" data-id="1">Delete</button></li>
        <li>Category 2 <button class="delete_category" data-id="2">Delete</button></li>
        <li>Category 3 <button class="delete_category" data-id="3">Delete</button></li>
    </ul>

    <script>
        $(document).ready(function(){
            $('.delete_category').click(function(){
                var category_id = $(this).data('id');
                
                $.ajax({
                    url: 'your_php_file.php',
                    method: 'POST',
                    data: {delete_category_id: category_id},
                    success: function(response){
                        var result = JSON.parse(response);
                        if(result.success){
                            $('li:contains("Category ' + category_id + '")').remove();
                        }
                    }
                });
            });
        });
    </script>
</body>
</html>

Keywords

PHP category deletion page refresh display issue caching.

Related Questions