Refactor to use a Post class

References #78

composer.json

@@ -22,6 +22,7 @@
         "drupal/config_split": "^1.4",
         "drupal/core-composer-scaffold": "^8.8",
         "drupal/core-recommended": "^8.8",
+        "drupal/discoverable_entity_bundle_classes": "^1.0",
         "drupal/google_analytics": "^2.4",
         "drupal/honeypot": "^2.0",
         "drupal/hook_event_dispatcher": "^1.28",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "45ee4839265d8526697b7d951fc351a2",
+    "content-hash": "94cf3f9b73a5a2ae184de25fd2a302b7",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -2322,6 +2322,56 @@
                 "issues": "https://www.drupal.org/project/issues/ctools"
             }
         },
+        {
+            "name": "drupal/discoverable_entity_bundle_classes",
+            "version": "1.0.0-alpha2",
+            "source": {
+                "type": "git",
+                "url": "https://git.drupalcode.org/project/discoverable_entity_bundle_classes.git",
+                "reference": "8.x-1.0-alpha2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://ftp.drupal.org/files/projects/discoverable_entity_bundle_classes-8.x-1.0-alpha2.zip",
+                "reference": "8.x-1.0-alpha2",
+                "shasum": "c8f1e27475f3a1b7d7694949baaf337ed126c05a"
+            },
+            "require": {
+                "drupal/core": "~8.0"
+            },
+            "require-dev": {
+                "drupal/paragraphs": "*"
+            },
+            "type": "drupal-module",
+            "extra": {
+                "branch-alias": {
+                    "dev-1.x": "1.x-dev"
+                },
+                "drupal": {
+                    "version": "8.x-1.0-alpha2",
+                    "datestamp": "1553798282",
+                    "security-coverage": {
+                        "status": "not-covered",
+                        "message": "Project has not opted into security advisory coverage!"
+                    }
+                }
+            },
+            "notification-url": "https://packages.drupal.org/8/downloads",
+            "license": [
+                "GPL-2.0+"
+            ],
+            "authors": [
+                {
+                    "name": "amcgowanca",
+                    "homepage": "https://www.drupal.org/user/802138"
+                }
+            ],
+            "description": "An experimental approach for implementing entity classes for specific bundles.",
+            "homepage": "https://www.drupal.org/project/discoverable_entity_bundle_classes",
+            "support": {
+                "source": "https://git.drupalcode.org/project/discoverable_entity_bundle_classes"
+            }
+        },
         {
             "name": "drupal/entity_reference_revisions",
             "version": "1.8.0",

config/default/core.extension.yml

@@ -14,6 +14,7 @@ module:
   custom: 0
   datetime: 0
   dblog: 0
+  discoverable_entity_bundle_classes: 0
   dynamic_page_cache: 0
   entity_reference_revisions: 0
   field: 0

web/modules/custom/custom/custom.module

@@ -7,14 +7,15 @@
 
 declare(strict_types=1);
 
-use Drupal\custom\Entity\Node;
+use Drupal\discoverable_entity_bundle_classes\Storage\Node\NodeStorage;
 
 /**
  * Implements hook_entity_type_build().
  */
 function custom_entity_type_build(array &$entityTypes): void {
+	/** @var \Drupal\Core\Entity\EntityTypeInterface[] $entityTypes */
   if (isset($entityTypes['node'])) {
-    $entityTypes['node']->setClass(Node::class);
+    $entityTypes['node']->setStorageClass(NodeStorage::class);
   }
 }
 

web/modules/custom/custom/src/Entity/Node/Post.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\custom\Entity\Node;
+
+use Drupal\node\Entity\Node;
+use Drupal\discoverable_entity_bundle_classes\ContentEntityBundleInterface;
+
+/**
+ * Defines an blog post node class.
+ *
+ * @ContentEntityBundleClass(
+ *   label = @Translation("Blog post"),
+ *   entity_type = "node",
+ *   bundle = "post"
+ * );
+ */
+class Post extends Node implements ContentEntityBundleInterface {
+
+  public function hasTweet(): bool {
+    return (bool) $this->get('field_has_tweet')->getString();
+  }
+
+}

web/modules/custom/custom/tests/src/Kernel/TalksTestBase.php

@@ -22,6 +22,7 @@ abstract class TalksTestBase extends EntityKernelTestBase {
     'datetime',
 
     // Contrib.
+    'discoverable_entity_bundle_classes',
     'entity_reference_revisions',
     'paragraphs',
     'hook_event_dispatcher',

web/themes/custom/opdavies/opdavies.theme

@@ -5,20 +5,22 @@
  * Functions to support theming in the Tailwind CSS theme.
  */
 
+use Drupal\custom\Entity\Node\Post;
+
 /**
  * Implements hook_preprocess_HOOK().
  */
 function opdavies_preprocess_page(array &$variables): void {
-  /** @var \Drupal\Core\Entity\EntityInterface $node */
-  if (!$node = \Drupal::routeMatch()->getParameter('node')) {
+  /** @var \Drupal\custom\Entity\Node\Post $node */
+  if (!$node = $variables['node']) {
     return;
   }
 
-  if ($node->getType() != 'post') {
+  if (!$node instanceof Post) {
     return;
   }
 
-  if ($node->get('field_has_tweet')->getString()) {
+  if ($node->hasTweet()) {
     $variables['#attached']['library'][] = 'opdavies/twitter';
   }
 }