MODX Revo: Parse full contents of resource

parse-resource.php

<?php
/**
 * Get full parsed HTML from resource
 * (you already need to have the resource object available in $this->resource)
 * 
 * @access public
 * @return string $html The parsed html of the resource
 */
public function parseResource() {
 
    // Store for later restoration
    $currentResource = $this->modx->resource;
    $currentResourceIdentifier = $this->modx->resourceIdentifier;
    $currentElementCache = $this->modx->elementCache;
     
    // Changes are made to prepare for processing the Resource
    $this->modx->resource = $this->resource;
    $this->modx->resourceIdentifier = $this->resource->get('id');
    $this->modx->elementCache = array();
             
    // The Resource having access to itself via $this->modx->resource is critical 
    // for getting resource fields, as well as for proper execution of Snippets 
    // that may appear in the content.
 
    // Process and return the cacheable content of the Resource
    $html = $this->modx->resource->process();
 
    // Restore the original values
    $this->modx->elementCache = $currentElementCache;
    $this->modx->resourceIdentifier = $currentResourceIdentifier;
    $this->modx->resource = $currentResource;
      
    // Determine how many passes the parser should take at a maximum
    $maxIterations = intval($this->modx->getOption('parser_max_iterations', null, 10));
      
    if (!$this->modx->parser) {
        $this->modx->getParser();
    }
 
    // Process the non-cacheable content of the Resource, but leave any unprocessed tags alone
    $this->modx->parser->processElementTags('', $html, true, false, '[[', ']]', array(), $maxIterations);
      
    // Process the non-cacheable content of the Resource, this time removing the unprocessed tags
    $this->modx->parser->processElementTags('', $html, true, true, '[[', ']]', array(), $maxIterations);
      
    return $html;
}