From 573acc473d7485d210df3f3012fde38dc8f8496b Mon Sep 17 00:00:00 2001
From: vladimir <vladimir@starofservice.com>
Date: Tue, 2 Apr 2019 16:10:42 +0300
Subject: [PATCH] [BUGFIX] Fix for #1579. Add argument  to UnlessViewHelper

---
 Classes/ViewHelpers/UnlessViewHelper.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Classes/ViewHelpers/UnlessViewHelper.php b/Classes/ViewHelpers/UnlessViewHelper.php
index a5581db19..ddb74e7f2 100644
--- a/Classes/ViewHelpers/UnlessViewHelper.php
+++ b/Classes/ViewHelpers/UnlessViewHelper.php
@@ -46,6 +46,18 @@
  */
 class UnlessViewHelper extends AbstractConditionViewHelper
 {
+    /**
+     * {@inheritdoc}
+     */
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+
+        if (false === array_key_exists('condition', $this->argumentDefinitions)) {
+            $this->registerArgument('condition', 'boolean', 'Condition expression conforming to Fluid boolean rules', false, false);
+        }
+    }
+
     /**
      * Rendering with inversion and ignoring any f:then / f:else children.
      *