From f4ee683fb62cc8702a45f7c0b090c64e4c7efbef Mon Sep 17 00:00:00 2001
From: Giuseppe Criscione <giuseppepeocriscione@gmail.com>
Date: Sat, 25 May 2019 23:17:17 +0200
Subject: [PATCH] Throw an exception on template helpers called outside
 rendering context

---
 formwork/Template/Template.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/formwork/Template/Template.php b/formwork/Template/Template.php
index 7ef1f197..fa748694 100755
--- a/formwork/Template/Template.php
+++ b/formwork/Template/Template.php
@@ -257,6 +257,10 @@ class Template
     public function __call($name, $arguments)
     {
         if (TemplateHelpers::has($name)) {
+            if (!$this->rendering) {
+                throw new RuntimeException(__METHOD__ . ' is allowed only in rendering context');
+            }
+
             $helper = TemplateHelpers::get($name);
             return $helper(...$arguments);
         }