From 0479c03502b8a65234641d08d8c3a7b1950fcb25 Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Sat, 11 Nov 2017 22:43:07 +1030
Subject: [PATCH] Performance: Reuse list of disallowed tags

---
 extensions/approval/src/Access/TagPolicy.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/extensions/approval/src/Access/TagPolicy.php b/extensions/approval/src/Access/TagPolicy.php
index 30e85a4d5..739f8fc7d 100755
--- a/extensions/approval/src/Access/TagPolicy.php
+++ b/extensions/approval/src/Access/TagPolicy.php
@@ -29,7 +29,11 @@ class TagPolicy extends AbstractPolicy
      */
     public function addToDiscussion(User $actor, Tag $tag)
     {
-        $disallowedTags = Tag::getIdsWhereCannot($actor, 'discussion.startWithoutApproval');
+        static $disallowedTags;
+
+        if (! $disallowedTags) {
+            $disallowedTags = Tag::getIdsWhereCannot($actor, 'discussion.startWithoutApproval');
+        }
 
         if (in_array($tag->id, $disallowedTags)) {
             return false;