From 4725be550414c7a7f483a9d506e9705857ddf56b Mon Sep 17 00:00:00 2001
From: Sebastian Thulin <sebastian.thulin@helsingborg.se>
Date: Wed, 6 Dec 2023 11:34:29 +0100
Subject: [PATCH] Cache SHOW table statement

---
 source/php/EventArchive.php | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/source/php/EventArchive.php b/source/php/EventArchive.php
index 67120472..b4313ea6 100644
--- a/source/php/EventArchive.php
+++ b/source/php/EventArchive.php
@@ -6,6 +6,7 @@ class EventArchive
 {
     private $eventPostType = 'event';
     private $dbTable;
+    private $db;
 
     public function __construct()
     {
@@ -15,7 +16,7 @@ public function __construct()
         $this->dbTable = $wpdb->prefix . "integrate_occasions";
 
         //Run functions if table exists
-        if ($this->db->get_var("SHOW TABLES LIKE '" . $this->dbTable . "'") !== null) {
+        if($this->occasionsTableExist()) {
             add_action('pre_get_posts', array($this, 'filterEvents'), 100);
         }
 
@@ -26,6 +27,17 @@ public function __construct()
         add_filter('Municipio/Archive/getTaxonomyFilters/taxonomies', [$this, 'taxonomyFilters'], 999, 2);
     }
 
+    private function occasionsTableExist() {
+        if (wp_cache_get($this->dbTable) !== false) {
+            return true;
+        }
+        if ($this->db->get_var("SHOW TABLES LIKE '" . $this->dbTable . "'") !== null) {
+            wp_cache_set($this->dbTable, true);
+            return true;
+        }
+        return false;
+    }
+
     public function showFilter($enabledFilters)
     {
         $current = get_queried_object();