Fix #976

DonCallisto · DonCallisto · commit f5682e55c952 · 2017-08-24T16:59:27.000+02:00
diff --git a/Twig/DataGridExtension.php b/Twig/DataGridExtension.php
@@ -452,7 +452,7 @@ protected function getTemplatesFromString(Twig_Environment $environment, $theme)
         $this->templates = [];
 
         $template = $environment->loadTemplate($theme);
-        while ($template !== null) {
+        while ($template instanceof \Twig_Template) {
             $this->templates[] = $template;
             $template = $template->getParent([]);
         }

Original file line number	Diff line number	Diff line change
`@@ -452,7 +452,7 @@ protected function getTemplatesFromString(Twig_Environment $environment, $theme)`
`452`	`452`	`$this->templates = [];`
`453`	`453`
`454`	`454`	`$template = $environment->loadTemplate($theme);`
`455`		`- while ($template !== null) {`
	`455`	`+ while ($template instanceof \Twig_Template) {`
`456`	`456`	`$this->templates[] = $template;`
`457`	`457`	`$template = $template->getParent([]);`
`458`	`458`	`}`