Upgrade Views

Documentations

What has been changed

  • Your views look much like before, but they are invoked differently … instead of CI3’s $this->load->view('x');, you can use return view('x');.

  • CI4 supports View Cells to build your response in pieces, and View Layouts for page layout.

  • The Template Parser is still there, and substantially enhanced.

Upgrade Guide

  1. First, move all views to the folder app/Views

  2. Change the loading syntax of views in every script where you load views:

    • from $this->load->view('directory_name/file_name') to return view('directory_name/file_name');

    • from $content = $this->load->view('file', $data, TRUE); to $content = view('file', $data);

  3. (optional) You can change the echo syntax in views from <?php echo $title; ?> to <?= $title ?>

  4. Remove the line defined('BASEPATH') OR exit('No direct script access allowed'); if it exists.

Code Example

CodeIgniter Version 3.x

Path: application/views:

<html>
<head>
    <title><?php echo html_escape($title); ?></title>
</head>
<body>
    <h1><?php echo html_escape($heading); ?></h1>

    <h3>My Todo List</h3>

    <ul>
    <?php foreach ($todo_list as $item): ?>
        <li><?php echo html_escape($item); ?></li>
    <?php endforeach; ?>
    </ul>

</body>
</html>

CodeIgniter Version 4.x

Path: app/Views:

<html>
<head>
    <title><?= esc($title) ?></title>
</head>
<body>
    <h1><?= esc($heading) ?></h1>

    <h3>My Todo List</h3>

    <ul>
    <?php foreach ($todo_list as $item): ?>
        <li><?= esc($item) ?></li>
    <?php endforeach ?>
    </ul>

</body>
</html>