Add trait to handle Authors in the data layer

src/Models/HasAuthor.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Hyde\Framework\Models;
+
+use Hyde\Framework\Services\AuthorService;
+
+/**
+ * Trait HasAuthor
+ *
+ * @see \Tests\Unit\HasAuthorTest
+ */
+trait HasAuthor
+{
+    public Author $author;
+
+    public function constructAuthor(): void
+    {
+        if (isset($this->matter['author'])) {
+            if (is_string($this->matter['author'])) {
+                $this->author = $this->findAuthor($this->matter['author']);
+            }
+            if (is_array($this->matter['author'])) {
+                $this->author = $this->createAuthor($this->matter['author']);
+            }
+        }
+    }
+
+    protected function findAuthor(string $author): Author
+    {
+        return AuthorService::find($author) ?: new Author($author);
+    }
+
+    protected function createAuthor(array $data): Author
+    {
+        $username = $data['username'] ?? $data['name'] ?? 'Guest';
+        return new Author($username, $data);
+    }
+}

src/Models/MarkdownPost.php

@@ -6,6 +6,7 @@
 
 class MarkdownPost extends MarkdownDocument
 {
+    use HasAuthor;
     use HasMetadata;
     use HasDateString;
     use HasFeaturedImage;
@@ -17,6 +18,7 @@ public function __construct(array $matter, string $body, string $title = '', str
     {
         parent::__construct($matter, $body, $title, $slug);
 
+        $this->constructAuthor();
         $this->constructMetadata();
         $this->constructDateString();
         $this->constructFeaturedImage();