From 5bf1a68223ed37026b3f1bf677d1dcb5d925f89d Mon Sep 17 00:00:00 2001
From: Nico Schefer <nico.schefer@gmail.com>
Date: Thu, 12 Mar 2020 18:38:48 +0100
Subject: [PATCH] Avoid repeating identical error messages

If an error message is available for a Zend_Form_Element_Multiselect element, the identical message is repeated for each item of the multiselect element. To avoid this, we can only display the unique error messages per element.
---
 library/Zend/Form/Element.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/Zend/Form/Element.php b/library/Zend/Form/Element.php
index 26bad9af3b..30b9564c5e 100644
--- a/library/Zend/Form/Element.php
+++ b/library/Zend/Form/Element.php
@@ -2276,6 +2276,7 @@ protected function _getErrorMessages()
                 foreach ($value as $val) {
                     $aggregateMessages[] = str_replace('%value%', $val, $message);
                 }
+                $aggregateMessages = array_unique($aggregateMessages); //prevent repeating the identical error message for multichoice-items
                 if (count($aggregateMessages)) {
                     if ($this->_concatJustValuesInErrorMessage) {
                         $values = implode($this->getErrorMessageSeparator(), $value);