use first image in content as featured image using regex, hugo forum topic 52527

config.toml

@@ -4,6 +4,7 @@ title = "lumbung.space"
 theme = "lumbung-theme"
 pluralizeListTitles = "false"
 paginate = 20
+hasCJKlanguage = "true"
 
 [params]
     logo = "/img/logo.svg"

content/shouts/pen.lumbung.space/harvesting-majelis-in-casco-art-institute-15th-16th-march-24/index.html

@@ -0,0 +1,17 @@
+---
+title: "Harvesting: Majelis in Casco Art Institute 15th & 16th March 24"
+date: "2024-04-18 07:39:51+00:00" #2021-06-10T10:46:33+02:00
+draft: false
+summary: ""
+contributors:  ["aline_crater"] 
+original_link: "https://pen.lumbung.space/2024/04/18/harvesting-majelis-in-casco-art-institute-15th-16th-march-24/"
+feed_name: "pen.lumbung.space"
+card_type: "pen"
+sources: ["pen.lumbung.space"]
+tags: ['majelis', 'documentafifteen', 'lumbung', 'lumbungdotspace', 'lumbungkios']
+
+---
+
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2165" height="724" src="diagrama_2-1024x724.jpg" width="1024"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2167" height="724" src="diagrama_3-1024x724.jpg" width="1024"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2168" height="724" src="diagrama_1-1-1024x724.jpg" width="1024"/></figure>

content/shouts/pen.lumbung.space/harvesting-majelis-in-nieuwe-instituut-8th-march-24/index.html

@@ -0,0 +1,20 @@
+---
+title: "Harvesting: Majelis in Nieuwe Instituut 8th March 24"
+date: "2024-03-08 00:08:37+00:00" #2021-06-10T10:46:33+02:00
+draft: false
+summary: ""
+contributors:  ["dianoninoo"] 
+original_link: "https://pen.lumbung.space/2024/03/08/harvesting-majelis-in-nieuwe-instituut-8th-march-24/"
+feed_name: "pen.lumbung.space"
+card_type: "pen"
+sources: ["pen.lumbung.space"]
+tags: ['majelis', 'documentafifteen']
+
+---
+
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2148" height="701" src="1_diana-cantarey_harvesting-rotterdam-1024x701.png" width="1024"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2149" height="1024" src="2_diana-cantarey_harvesting-rotterdam-768x1024.png" width="768"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2152" height="1024" src="3_diana-cantarey_harvesting-rotterdam-768x1024.png" width="768"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2150" height="706" src="4_diana-cantarey_harvesting-rotterdam-1024x706.png" width="1024"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2153" height="768" src="5_diana-cantarey_harvesting-rotterdam-1024x768.png" width="1024"/></figure>
+<figure class="wp-block-image size-large"><img alt="" class="wp-image-2151" height="1024" src="6_diana-cantarey_harvesting-rotterdam-768x1024.png" width="768"/></figure>

themes/lumbung-theme/layouts/partials/pen_card.html

@@ -24,7 +24,17 @@
               {{ .Summary }}
             </div>
           </div>
-          
+          <small>this should show the first image in the content</small>
+          {{$first_image := ""}}
+          {{$matches := findRESubmatch `<img\s.*?src=(?:'|")([^'">]+)(?:'|")` .Content 1 }}
+          {{range $matches}}{{$first_image = index . 1}}{{end}}
+            {{with .Resources.Get $first_image}}
+              {{.ResourceType}}
+              {{.MediaType}}
+              <img src="{{ .Permalink }}" alt="">
+              {{/* uncomment below to crash the build*/}}
+              {{/* .Width */}}
+              {{end}}
           <footer class='post-footer'>
             <a href="{{ .RelPermalink }}">
               <svg width="11" height="11" viewBox="0 0 11 11" xmlns="http://www.w3.org/2000/svg">