From 60fecc753e08b7fbdd981b0c20a87d136f3b98ab Mon Sep 17 00:00:00 2001
From: Tobias Feijten <tobias@kick-in.nl>
Date: Mon, 22 Jul 2019 11:52:58 +0200
Subject: [PATCH] Prevent issues with Doctrine Inflector due to null string

---
 .../CommonAdmin/ExcelAction/ExcelBuilderAction.php.twig       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Resources/templates/CommonAdmin/ExcelAction/ExcelBuilderAction.php.twig b/Resources/templates/CommonAdmin/ExcelAction/ExcelBuilderAction.php.twig
index 49784e9d..adc6d87d 100644
--- a/Resources/templates/CommonAdmin/ExcelAction/ExcelBuilderAction.php.twig
+++ b/Resources/templates/CommonAdmin/ExcelAction/ExcelBuilderAction.php.twig
@@ -52,7 +52,7 @@ class ExcelController extends \{{ namespace_prefix }}\{{ bundle_name }}\Controll
           $sheet = $spreadsheet->setActiveSheetIndex(0);
           $results = $this->getResults();
 
-          $suffix = Inflector::classify($key);
+          $suffix = Inflector::classify($key === null ? '' : $key);
           if (!method_exists($this,"createSpreadsheetHeader$suffix")) {
               // back to defaults
               $key = null;
@@ -97,7 +97,7 @@ class ExcelController extends \{{ namespace_prefix }}\{{ bundle_name }}\Controll
           $sheet = $phpExcelObject->setActiveSheetIndex(0);
           $results = $this->getResults();
 
-          $suffix = Inflector::classify($key);
+          $suffix = Inflector::classify($key === null ? '' : $key);
           if (!method_exists($this,"createExcelHeader$suffix")) {
               // back to defaults
               $key = null;