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Upgrade Views¶

Documentation¶

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¶

First, move all views to the folder app/Views.
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);
(optional) You can change the echo syntax in views from <?php echo $title; ?> to <?= $title ?>
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>