From fab59c66f0eff49fdadd7a50b64a7e4a7ae43970 Mon Sep 17 00:00:00 2001
From: Robin Ward <robin.ward@gmail.com>
Date: Mon, 4 Jun 2018 15:43:26 -0400
Subject: [PATCH] FIX: Protection against dangling category group records

---
 app/models/category.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/models/category.rb b/app/models/category.rb
index 4d042500afd..379cc5acc7c 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -310,7 +310,9 @@ SQL
   def permissions_params
     hash = {}
     category_groups.includes(:group).each do |category_group|
-      hash[category_group.group_name] = category_group.permission_type
+      if category_group.group.present?
+        hash[category_group.group_name] = category_group.permission_type
+      end
     end
     hash
   end