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* @license GNU General Public License version 2 or later; see LICENSE.txt */ defined('_JEXEC') or die(); use Joomla\CMS\Plugin\CMSPlugin; use Joomla\Component\Fields\Administrator\Helper\FieldsHelper; /** * Plug-in to show a custom field in eg an article * This uses the {fields ID} syntax * * @since 3.7.0 */ class PlgContentFields extends CMSPlugin { /** * Plugin that shows a custom field * * @param string $context The context of the content being passed to the plugin. * @param object &$item The item object. Note $article->text is also available * @param object &$params The article params * @param int $page The 'page' number * * @return void * * @since 3.7.0 */ public function onContentPrepare($context, &$item, &$params, $page = 0) { // If the item has a context, overwrite the existing one if ($context === 'com_finder.indexer' && !empty($item->context)) { $context = $item->context; } elseif ($context === 'com_finder.indexer') { // Don't run this plugin when the content is being indexed and we have no real context return; } // Don't run if there is no text property (in case of bad calls) or it is empty if (empty($item->text)) { return; } // Simple performance check to determine whether bot should process further if (strpos($item->text, 'field') === false) { return; } // Prepare the text if (isset($item->text)) { $item->text = $this->prepare($item->text, $context, $item); } // Prepare the intro text if (isset($item->introtext)) { $item->introtext = $this->prepare($item->introtext, $context, $item); } } /** * Prepares the given string by parsing {field} and {fieldgroup} groups and replacing them. * * @param string $string The text to prepare * @param string $context The context of the content * @param object $item The item object * * @return string * * @since 3.8.1 */ private function prepare($string, $context, $item) { // Search for {field ID} or {fieldgroup ID} tags and put the results into $matches. $regex = '/{(field|fieldgroup)\s+(.*?)}/i'; preg_match_all($regex, $string, $matches, PREG_SET_ORDER); if (!$matches) { return $string; } $parts = FieldsHelper::extract($context); if (count($parts) < 2) { return $string; } $context = $parts[0] . '.' . $parts[1]; $fields = FieldsHelper::getFields($context, $item, true); $fieldsById = array(); $groups = array(); // Rearranging fields in arrays for easier lookup later. foreach ($fields as $field) { $fieldsById[$field->id] = $field; $groups[$field->group_id][] = $field; } foreach ($matches as $i => $match) { // $match[0] is the full pattern match, $match[1] is the type (field or fieldgroup) and $match[2] the ID and optional the layout $explode = explode(',', $match[2]); $id = (int) $explode[0]; $output = ''; if ($match[1] === 'field' && $id) { if (isset($fieldsById[$id])) { $layout = !empty($explode[1]) ? trim($explode[1]) : $fieldsById[$id]->params->get('layout', 'render'); $output = FieldsHelper::render( $context, 'field.' . $layout, array( 'item' => $item, 'context' => $context, 'field' => $fieldsById[$id], ) ); } } else { if ($match[2] === '*') { $match[0] = str_replace('*', '\*', $match[0]); $renderFields = $fields; } else { $renderFields = $groups[$id] ?? ''; } if ($renderFields) { $layout = !empty($explode[1]) ? trim($explode[1]) : 'render'; $output = FieldsHelper::render( $context, 'fields.' . $layout, array( 'item' => $item, 'context' => $context, 'fields' => $renderFields, ) ); } } $string = preg_replace("|$match[0]|", addcslashes($output, '\\$'), $string, 1); } return $string; } }