Revo Snippet

revosnippet.class.php

<?php

if( !defined('VENDOR_PATH')) {
  define('VENDOR_PATH', MODX_BASE_PATH.'/vendors');
}

class RevoSnippet
{
    public function __construct()
    {   
      $this->defaults = array(
          'load_twig'  => true,
          'twig_path'  => array(
              MODX_BASE_PATH,
          ),
          'twig_cache'  => MODX_BASE_PATH.'assets/cache/twig/',
          'twig_loader' => 'Twig_Loader_Filesystem',
          );
      
      $this->pre_init();
      $this->init();
      $this->post_init();
    }
    
    public function pre_init() {}
    
    public function init()
    {
      global $modx;
      
      $this->config = array_merge($this->defaults, (array) $modx->event->params);
      $this->modx = &$modx;
      $this->request = new HTTPRequest;

      if($this->config['load_twig']) {
        $this->load_twig();
      }

      $this->set_page();
    }

    protected function load_twig()
    {
      $folder = VENDOR_PATH.'twig/lib/Twig/';
      Autoload::add_directory(VENDOR_PATH.'twig/lib/');
      Twig_Autoloader::register();
      
      $this->twig = $this->instantiate_twig($this->config);
    }
    
    public function instantiate_twig($config)
    {
      $path  = $config['twig_path'];
      $cache = $config['twig_cache'];
      
      $loader_class = $config['twig_loader'];
      $loader = new $loader_class($path);
      
      $twig = new Twig_Environment($loader, array(
        'debug' => true,
        'cache' => $cache,
        'auto_reload' => true,
      ));
      
      return $twig; 
    }
    
    public function post_init() {}

    public function render($template, $twigInstance = false)
    {
      if($twigInstance) {
        $twig = $twigInstance;
      } else {
        $twig = $this->twig;
      }
      
      foreach(get_object_vars($this) as $property => $value) {
        $params[$property] = $value;
      }
      $params['this'] = $this;
      
      try {
        $template = $twig->loadTemplate($template);
      } catch(Exception $e) {
        return "Unable to find template '{$template}'";
        return $e->getMessage();
      }
      
      try {
        return $template->render($params);
      } catch(Exception $e) {
        return $e->getMessage();
      }        
        
    }

    public function set_page()
    {
        if(!$this->modx->isFrontend()) {
            return;
        }
        
        $this->page = $this->modx->resource->toArray();        
    }

    public function execute()
    {
    
    }
}

modx->isFrontend()) { return; } $this->page = $this->modx->resource->toArray(); } ```