Get a templated list of ContentBlocks layout settings

cbGetLayoutSettings.snippet.php

<?php
/**
 * Use the cbGetLayoutSettings snippet to get a templated list of settings from a particular layout.
 * Based on cbGetLayoutSetting snippet https://gist.github.com/sepiariver/302ab3cc7bd47233f0136f4379de89cf
 *
 * @param (id) &resource allows checking for fields on other resources.
 * @param (bool) &showDebug return debugging info as JSON.
 * @param (string) &toPlaceholder set a placeholder with this string as key, instead of returning.
 * @param (int) &layout - (required) ID of ContentBlocks layout from which to fetch the settings.
 * @param (string) &tpl - name of chunk for templating the settings of one layout.
 * @param (int) &limit - limits the number of settings returned.
 * @param (int) &offset - offset of the returned settings to skip.
 *
 * Example:
 * [[cbGetLayoutSettings? &layout=`8` &tpl=`chunkName`]]
 *
 * @author YJ Tso @sepiariver <yj@modx.com>
 * @author Thomas Jakobi @Jako <office@treehillstudio.com>
 *
 * @var modX $modx
 * @var array $scriptProperties
 */

$resource = (isset($scriptProperties['resource']) && $scriptProperties['resource'] != $modx->resource->get('id')) ? $modx->getObject('modResource', $scriptProperties['resource']) : $modx->resource;
if (!$resource) {
    return '';
}
$layout = (int)$modx->getOption('layout', $scriptProperties, '');
$tpl = $modx->getOption('tpl', $scriptProperties, '');
$showDebug = (bool)$modx->getOption('showDebug', $scriptProperties, false, true);
$toPlaceholder = $modx->getOption('toPlaceholder', $scriptProperties, '');
$limit = (int)$modx->getOption('limit', $scriptProperties, 0);
$offset = (int)$modx->getOption('offset', $scriptProperties, 0);

$_cache = array();
$debug = array('scriptProperties' => $scriptProperties, 'message' => array());
$output = [];

if (empty($layout)) {
    $showDebug = true;
    $debug['message'][] = 'layout property is required.';
} else {
    // Make sure this is a contentblocks-enabled resource
    $enabled = $resource->getProperty('_isContentBlocks', 'contentblocks');
    if ($enabled !== true) {
        $debug['message'][] = 'the ressource is not a contentblocks resource.';
        return;
    } else {
        $debug['cbenabled'] = $enabled;

        $cbcontent = $resource->getProperty('content', 'contentblocks');
        $debug['cbcontentsettings'] = array();

        $cbcontent = json_decode($cbcontent, true);
        if (is_array($cbcontent) && !empty($cbcontent)) {
            foreach ($cbcontent as $index => $item) {
                if ($item['layout'] == $layout) {
                    $debug['cbcontentsettings'] = $item['settings'];
                    if (isset($item['settings'])) {
                        if (!empty($tpl)) {
                            $chunk = null;
                            if (!isset($_cache['@CHUNK'])) {
                                $_cache['@CHUNK'] = array();
                            }
                            if (!array_key_exists($tpl, $_cache['@CHUNK'])) {
                                if ($chunk = $modx->getObject('modChunk', array('name' => $tpl))) {
                                    $_cache['@CHUNK'][$tpl] = $chunk->toArray('', true);
                                } else {
                                    $_cache['@CHUNK'][$tpl] = false;
                                }
                            } elseif (is_array($_cache['@CHUNK'][$tpl])) {
                                $chunk = $modx->newObject('modChunk');
                                $chunk->fromArray($_cache['@CHUNK'][$tpl], '', true, true, true);
                            }
                            if (is_object($chunk)) {
                                $chunk->setCacheable(false);
                                $output[] = $chunk->process($item['settings']);
                            } else {
                                $output[] = print_r($item['settings'], true);
                                $debug['message'][] = '"' . $tpl . '" is not a valid chunkname.';
                            }
                        } else {
                            $output[] = print_r($item['settings'], true);
                        }
                    } else {
                        $debug['message'][] = 'cbcontent was not an array or was empty.';
                    }
                }
            }
        } else {
            $debug['message'][] = 'cbcontent was not an array or was empty.';
        }
    }

    if (empty($output)) {
        $debug['message'][] = 'layout was not found.';
    } else {
        $debug['output'] = $output;
    }
}

if ($showDebug) {
    $output = json_encode($debug);
} else {
    if ($offset) {
        if ($limit) {
            $output = array_slice($output, $offset, $limit);
        } else {
            $output = array_slice($output, $offset);
        }
    }
    $output = implode("\n", $output);
}

if (empty($toPlaceholder)) {
    return $output;
}
$modx->setPlaceholder($toPlaceholder, $output);