first commit

plugins/fields/sql/tmpl/sql.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @package     Joomla.Plugin
+ * @subpackage  Fields.Sql
+ *
+ * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Factory;
+use Joomla\Database\ParameterType;
+
+$value = $field->value;
+
+if ($value == '') {
+    return;
+}
+
+$db    = Factory::getDbo();
+$value = (array) $value;
+$query = $db->getQuery(true);
+$sql   = $fieldParams->get('query', '');
+
+$bindNames = $query->bindArray($value, ParameterType::STRING);
+
+// Run the query with a having condition because it supports aliases
+$query->setQuery($sql . ' HAVING ' . $db->quoteName('value') . ' IN (' . implode(',', $bindNames) . ')');
+
+try {
+    $db->setQuery($query);
+    $items = $db->loadObjectList();
+} catch (Exception $e) {
+    // If the query failed, we fetch all elements
+    $db->setQuery($sql);
+    $items = $db->loadObjectList();
+}
+
+$texts = [];
+
+foreach ($items as $item) {
+    if (in_array($item->value, $value)) {
+        $texts[] = $item->text;
+    }
+}
+
+echo htmlentities(implode(', ', $texts));