Move all files to old/drupal/

old/drupal/web/modules/custom/blog/opdavies_blog.install

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for opdavies_blog.
+ */
+
+declare(strict_types=1);
+
+use Drupal\opdavies_blog\Repository\PostRepository;
+
+/**
+ * Mark existing blog posts as sent to social media.
+ */
+function opdavies_blog_update_8001(): void {
+  $posts = \Drupal::service(PostRepository::class)->getAll();
+
+  foreach ($posts as $post) {
+    $post->markAsSentToSocialMedia();
+    $post->save();
+  }
+}