From bd72c59e418a7dd5d193d5099fee11073663bd63 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@rc-d.net>
Date: Thu, 15 Mar 2018 08:55:27 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#535 missing null
 check for return value from getInputfield() in ProcessField

---
 wire/modules/Process/ProcessField/ProcessField.module | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wire/modules/Process/ProcessField/ProcessField.module b/wire/modules/Process/ProcessField/ProcessField.module
index 073aae66..b0637653 100644
--- a/wire/modules/Process/ProcessField/ProcessField.module
+++ b/wire/modules/Process/ProcessField/ProcessField.module
@@ -1012,7 +1012,8 @@ class ProcessField extends Process implements ConfigurableModule {
 		$fieldtypeNames = $this->field->type->getConfigAllowContext($this->field);
 		if(!is_array($fieldtypeNames)) $fieldtypeNames = array();
 		$dummyPage = $this->wire('pages')->get("/"); // only using this to satisfy param requirement 
-		$inputfieldNames = $this->field->getInputfield($dummyPage)->getConfigAllowContext($this->field);
+		$inputfield = $this->field->getInputfield($dummyPage);
+		$inputfieldNames = $inputfield ? $inputfield->getConfigAllowContext($this->field) : array();
 		if(!is_array($inputfieldNames)) $inputfieldNames = array();
 		$alwaysSelected = array_merge($fieldtypeNames, $inputfieldNames);
 		$allowContexts = $this->field->get('allowContexts');