first commit

plugins/fields/user/tmpl/user.php

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * @package     Joomla.Plugin
+ * @subpackage  Fields.User
+ *
+ * @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;
+
+$value = $field->value;
+
+if ($value == '') {
+    return;
+}
+
+$value = (array) $value;
+$texts = [];
+
+foreach ($value as $userId) {
+    if (!$userId) {
+        continue;
+    }
+
+    $user = $this->getUserFactory()->loadUserById($userId);
+
+    if ($user) {
+        // Use the Username
+        $texts[] = $user->name;
+        continue;
+    }
+
+    // Fallback and add the User ID if we get no JUser Object
+    $texts[] = $userId;
+}
+
+echo htmlentities(implode(', ', $texts));