Resize Image on Save octoberCMS

resize_on_save_model

use October\Rain\Database\Attach\Resizer;

class ClassName extends Model{

    public $attachOne = [
        'img' => 'System\Models\File',
    ];
    
    public function afterSave(){
        $imgPath = $this->img->getLocalPath();
        $width = 800;
        $height = 800;
        $options = []; // or ['mode' => 'crop']

        Resizer::open($imgPath)
            ->resize($width, $height, $options)
            ->save($imgPath);
    }
}

This can be used in any model of octoberCMS that has an image - it is used to ensure that the file is of a maximum size (width and height).