Type error in SYSTEMPATH\View\Cells\Cell.php at line 88

I got a type error in SYSTEMPATH\View\Cells\Cell.php at line 88:
substr(): Argument #3 ($length) must be of type ?int, bool given
because of
declare(strict_types=1);
I changed the code to:
            $pos = strrpos($viewName, '_cell');
            if ($pos === false) {
              $possibleView1 = $directory . $viewName . '.php';             
            } else {
              $possibleView1 = $directory . substr($viewName, 0, $pos) . '.php';
            }

Now the gallery using Cell.php is working. I hope it helps.

Thank you. But how to reproduce the error?

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Thank you. But how to reproduce the error?

The error is in Codeigniter 4.5.1. I did not use version 4.5.0.

I use in app/Cells/GalleryItem.php the following code:

<?php

namespace App\Cells;

use CodeIgniter\View\Cells\Cell;

class GalleryItem extends Cell
{
    public $group;
    public $wrap;
    public $overlay;
    public $item;
    public $col;
    public $margin;
    public $imagepath;
    public $image;
    public $imagealt;
    public $imagebig;
}

and in app/Cells/gallery_item.php:

<div class="<?= $item; ?> <?= $col; ?> <?= $margin; ?>">
  <div class="<?php print($wrap); ?>">
    <img src="<?php print($imagepath . '/' . 'thumb/' . $image); ?>" alt="<?php print($imagealt); ?>" class="img-responsive">
    <div class="<?php print($overlay); ?>">
      <a href="<?php print($imagepath . '/' . 'big/' . $imagebig); ?>" data-lightbox="<?= $group; ?>">
        <span></span>
      </a>
    </div>
  </div> <!--img-wrap-->     
</div><!--item-->

This is called from a view with

<?= view_cell('App\Cells\GalleryItem', [
    'group'    => 'examplegroup',
    'wrap'      => 'item-img-wrap',
    'overlay'  => 'item-img-overlay',
    'item'      => 'mix',
    'col'      => 'col-sm-4',
    'margin'    => 'margin30', 
    'imagepath' => '/assets/images/gallery',
    'image'    => 'example-th.jpg',
    'imagealt'  => 'Example',
    'imagebig'  => 'example.jpg',
]); ?>

Combined with Michelf markdown I use Codeigniter as a flatfile CMS. It substitutes another flatfile CMS. No need of other third party code except for markdown.

Your code does not follow the convention.

By convention, the class name should be in PascalCase suffixed with Cell and the view should be the snake_cased version of the class name, without the suffix. For example, if you have a MyCell class, the view file should be my.php.
https://codeigniter4.github.io/CodeIgnit...lled-cells

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Thank you. That works. I think I got the example from another site.