From 698c33a395a0ffafbc3f491bea2abfaf039860f5 Mon Sep 17 00:00:00 2001
From: Nick <nicholas.sorokin@hotmail.com>
Date: Fri, 1 Oct 2021 00:07:58 +0930
Subject: [PATCH] Cache page content

hubertusanton/silverstripe-seo#40
---
 src/SeoObjectExtension.php | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/src/SeoObjectExtension.php b/src/SeoObjectExtension.php
index edf021e..2842e0d 100644
--- a/src/SeoObjectExtension.php
+++ b/src/SeoObjectExtension.php
@@ -811,16 +811,22 @@ public function getNumCharsTitle() {
      */
     public function getPageContent()
     {
-        $session = [];
-        if (Controller::has_curr()) {
-            $session = Controller::curr()->getRequest()->getSession();
-        }
-        $response = Director::test($this->owner->Link(), [], $session);
+        static $cache = null;
+        
+        if ($cache === null) {
+            $session = [];
+            if (Controller::has_curr()) {
+                $session = Controller::curr()->getRequest()->getSession();
+            }
+            $response = Director::test($this->owner->Link(), [], $session);
 
-        if (!$response->isError()) {
-            return $response->getBody();
+            if (!$response->isError()) {
+                $cache = $response->getBody();
+            } else {
+                $cache = '';
+            }
         }
-
-        return '';
+        
+        return $cache;
     }
 }