From a7c25183100613f95672ac3a1603c02335fcdd9e Mon Sep 17 00:00:00 2001
From: Beth Skurrie <beth@bethesque.com>
Date: Thu, 5 Dec 2019 13:57:56 +1100
Subject: [PATCH] chore: cache head tag names on the domain object

---
 lib/pact_broker/pacts/all_pact_publications.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/pact_broker/pacts/all_pact_publications.rb b/lib/pact_broker/pacts/all_pact_publications.rb
index 4a9d557f3..261eb9292 100644
--- a/lib/pact_broker/pacts/all_pact_publications.rb
+++ b/lib/pact_broker/pacts/all_pact_publications.rb
@@ -109,7 +109,7 @@ def to_domain_without_tags
       def head_tag_names
         # Avoid circular dependency
         require 'pact_broker/pacts/latest_tagged_pact_publications'
-        LatestTaggedPactPublications.where(id: id).select(:tag_name).collect{|t| t[:tag_name]}
+        @head_tag_names ||= LatestTaggedPactPublications.where(id: id).select(:tag_name).collect{|t| t[:tag_name]}
       end
 
       def to_domain_with_content