Upgrade Views

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 echo view(x);.

  • CI4 supports view “cells”, to build your response in pieces.

  • 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 echo view('directory_name/file_name');

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

Code Example

CodeIgniter Version 3.11

Path: application/views:

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

    <h3>My Todo List</h3>

    <ul>
    <?php foreach ($todo_list as $item): ?>
        <li><?php echo $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>