From 35ba795bac6d942b664e60a1c8dab367e3cce2de Mon Sep 17 00:00:00 2001
From: Len van Essen <len@wndr.digital>
Date: Fri, 23 Sep 2022 10:32:10 +0200
Subject: [PATCH 1/3] Include postdate in Mapping

---
 src/services/Indexes.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/services/Indexes.php b/src/services/Indexes.php
index f78aca2..7e18722 100644
--- a/src/services/Indexes.php
+++ b/src/services/Indexes.php
@@ -461,13 +461,14 @@ public function buildMapping(): array
         $mapping = [];
 
         $predefinedAttributes = [
-            'title',
-            'slug',
+            'title' => 'text',
+            'slug' => 'text',
+            'postDate' => 'date'
         ];
 
-        foreach ($predefinedAttributes as $attribute) {
+        foreach ($predefinedAttributes as $attribute => $type) {
             $mapping[$fieldPrefix . 'attribute_' . $attribute] = [
-                'type' => 'text',
+                'type' => $type,
                 'analyzer' => 'standard',
             ];
         }

From bb345fa66cf045a46074e665abd86b3331d0b0ac Mon Sep 17 00:00:00 2001
From: Len van Essen <len@wndr.digital>
Date: Fri, 23 Sep 2022 10:53:19 +0200
Subject: [PATCH 2/3] Fix analyzer config

---
 src/services/Indexes.php | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/services/Indexes.php b/src/services/Indexes.php
index 7e18722..76d5f5b 100644
--- a/src/services/Indexes.php
+++ b/src/services/Indexes.php
@@ -461,16 +461,21 @@ public function buildMapping(): array
         $mapping = [];
 
         $predefinedAttributes = [
-            'title' => 'text',
-            'slug' => 'text',
-            'postDate' => 'date'
+            'title' => [
+                'type' => 'text',
+                'analyzer' => 'standard',
+            ],
+            'slug' => [
+                'type' => 'text',
+                'analyzer' => 'standard',
+            ],
+            'postDate' => [
+                'type' => 'date',
+            ],
         ];
 
-        foreach ($predefinedAttributes as $attribute => $type) {
-            $mapping[$fieldPrefix . 'attribute_' . $attribute] = [
-                'type' => $type,
-                'analyzer' => 'standard',
-            ];
+        foreach ($predefinedAttributes as $attribute => $config) {
+            $mapping[$fieldPrefix . 'attribute_' . $attribute] = $config;
         }
 
         /**

From 713fae222f2430cdde5a470245e1324f5bc73985 Mon Sep 17 00:00:00 2001
From: Len van Essen <len@wndr.digital>
Date: Fri, 23 Sep 2022 11:04:36 +0200
Subject: [PATCH 3/3] Add to indexation

---
 src/services/Search.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/services/Search.php b/src/services/Search.php
index e0562e8..7f26971 100644
--- a/src/services/Search.php
+++ b/src/services/Search.php
@@ -71,6 +71,10 @@ public function indexElementAttributes(ElementInterface $element, ?array $fieldH
             $keywords['attribute_' . $attribute] = $element->getSearchKeywords($attribute);
         }
 
+        if(isset($element->postDate) && $element->postDate instanceof \DateTime) {
+            $keywords['attribute_postDate'] = $element->postDate->format(\DateTime::ATOM);
+        }
+
         // Update the custom fields' keywords
         foreach ($updateFields as $field) {
             $fieldValue = $element->getFieldValue($field->handle);